ISO/IEC 17025 Accreditation for Testing and Calibration Laboratories in the Philippines

Accredited results the market will actually accept

Sterling gets your testing or calibration laboratory to ISO/IEC 17025:2017 accreditation — the international benchmark for laboratory competence — and we do it through a recognised accreditation body such as the Philippine Accreditation Bureau (PAB). Accreditation is what turns your measurements into valid, defensible results your customers, regulators and overseas partners will accept without re-testing. That means tender eligibility, market and cross-border acceptance under the ILAC arrangement, fewer disputed reports, and a competence claim you can prove rather than assert. We prepare and prove your laboratory; the accreditation body grants the accreditation after its own assessment.

What ISO/IEC 17025 accreditation actually does for your laboratory

ISO/IEC 17025 answers a single commercial question: can this laboratory’s results be trusted? Everything else in the standard exists to make that answer defensible. A laboratory can own excellent instruments and employ capable analysts and still produce results that a customer, an auditor or a court can reasonably challenge — because competence that is not demonstrated is competence that does not count. Accreditation is the independent, ongoing demonstration that closes that gap.

The first and most concrete outcome is results that survive scrutiny. When your report carries an accreditation mark, the reader is not taking your word for it. An accreditation body has assessed the specific methods on your scope, watched your analysts run them, examined your measurement-uncertainty budgets, checked your traceability chain and reviewed your proficiency-testing performance. That is a very different thing from a quality manual on a shelf. For a laboratory, this is the difference between a result that ends an argument and a result that starts one.

The second outcome is market access. Across regulated and export-facing industries, buyers increasingly specify that test and calibration data must come from an accredited laboratory — not because they enjoy paperwork, but because they are managing their own downstream risk and want data they can rely on. Losing a supply contract, a government tender or an export shipment because your data is not accredited is a commercial wound that has nothing to do with the technical quality of your work and everything to do with the recognition of it. Accreditation removes that objection from the table.

The third outcome is cross-border recognition. Because PAB is a signatory to the ILAC Mutual Recognition Arrangement, results from a PAB-accredited laboratory carry recognition that reaches well beyond the Philippines. The principle the arrangement is built on — tested or calibrated once, accepted everywhere the arrangement reaches — is precisely what an exporter, a multinational’s local plant, or a laboratory serving foreign clients needs. It replaces duplicate testing in the destination market with a report that is already trusted.

The fourth outcome is internal, and it is the one laboratories underestimate before they go through the process. Building a system that meets ISO/IEC 17025 forces you to understand your own measurement process at a level most laboratories have never reached: where your uncertainty actually comes from, which steps in a method genuinely control the result, how your equipment drifts between calibrations, and how competent your people really are on each parameter. Laboratories routinely discover that this discipline reduces re-work, catches problems before they leave the building, and settles the recurring internal question of “can we actually offer this test?” with evidence instead of optimism.

Accreditation is not a certificate you hang on a wall and forget. It is a standing, independently verified claim about your competence — and in a market where results are only as valuable as their credibility, that claim is the product.

Who needs ISO/IEC 17025 accreditation in the Philippines

ISO/IEC 17025 is, in general terms, voluntary — there is no single Philippine law that requires every laboratory to hold it. In practice, that framing is misleading, because the pressure to accredit rarely comes from a statute. It comes from the people who receive your results and decide whether to act on them. If your data feeds a product release, a regulatory submission, a construction sign-off, an environmental clearance or an export shipment, the question is not whether accreditation is legally mandatory but whether anyone in that chain will accept unaccredited results. Increasingly, they will not.

Commercial third-party testing laboratories

If selling test results is your business, accreditation is close to a licence to compete. Environmental laboratories running water, wastewater, air-quality and effluent analyses; food and microbiology laboratories; construction-materials laboratories testing aggregates, concrete and steel; chemical, textile, electrical and petroleum laboratories — for all of these, the accredited scope is the menu clients buy from. A parameter that is not on your accredited scope is one a serious buyer may decline to source from you, no matter how well you can run it.

In-house laboratories in regulated manufacturing

Captive laboratories inside manufacturers face a quieter but equally real pressure. When a food producer’s own laboratory releases product, when a pharmaceutical or device manufacturer’s laboratory supports a regulatory submission, or when a cement, electronics or petroleum plant’s laboratory generates conformity data, the credibility of those internal results is under the same scrutiny as a third party’s. Manufacturers running ISO 22000 food-safety systems, or medical-device makers under ISO 13485, frequently find their laboratory’s data is the weak link an auditor or customer probes first — and accrediting that laboratory to ISO/IEC 17025 is how they close it.

Calibration and metrology providers

Calibration laboratories occupy a special place in this ecosystem, because accredited testing laboratories are required to source their traceability from competent calibration providers. That makes an accredited calibration laboratory — dimensional, mass, temperature, pressure, electrical, volumetric or otherwise — both a service business and a critical node in everyone else’s traceability chain. If your calibration certificates are not themselves accredited, you are limiting how useful they are to the very customers who most need them.

Laboratories in regulated domains

Several Philippine regulators recognise, require or give preference to accredited laboratory results within their own programmes — environmental monitoring under the DENR, certain food and drug testing recognised by the FDA, agricultural and materials-testing regimes among them. These recognition schemes have their own rules that sit alongside ISO/IEC 17025, not inside it, and a government recognition or licence is not the same thing as accreditation. Confirm the current criteria with the relevant authority for your specific work — but as a planning assumption, accreditation is very often the technical foundation those programmes are built on. Laboratories supporting an ISO 14001 environmental programme, for example, frequently need accredited monitoring data to make the wider system credible.

When an overseas head office or customer mandates it

A large and growing share of Philippine accreditation demand is driven from abroad. A multinational may require its Manila or Cebu laboratory to reach ISO/IEC 17025 as a condition of remaining an approved group facility. A foreign customer may specify accredited results as a contractual term. An exporter may need accredited test reports for a destination market’s border controls. In every case the local laboratory carries a foreign-set expectation, usually with English-language reporting, a group quality function coordinating remotely, and little tolerance for a drawn-out project. Sterling runs these engagements routinely — translating a head-office mandate into a scope PAB will assess, coordinating with an overseas QA lead, and building a system that satisfies both the accreditation body here and the parent’s own expectations. If you are still deciding whether ISO/IEC 17025 is even the right scheme for your work — as opposed to ISO 15189 for a medical laboratory or ISO/IEC 17020 for an inspection body — our Select the Standard tool is the fastest way to get to a clear answer.

What ISO/IEC 17025:2017 actually requires

The current edition is ISO/IEC 17025:2017, “General requirements for the competence of testing and calibration laboratories” — the third edition, published in 2017 to replace the 2005 version, and confirmed as current in ISO’s most recent systematic review. Unlike several management-system standards that are mid-transition right now, ISO/IEC 17025 is stable: there is no revision in progress and no looming deadline forcing laboratories to re-transition. That stability is genuinely useful — a system you build to the 2017 edition today is not one you will have to re-engineer next year.

The 2017 edition reorganised the standard around a process approach and introduced risk-based thinking, aligning it structurally with the wider family of conformity-assessment standards. It is far less prescriptive than the edition it replaced: it tells you what outcomes you must achieve and leaves you more freedom in how you achieve them. That freedom is a gift to a competent laboratory and a trap for one looking to copy a template. The requirements fall into a small number of clause groups.

General and structural requirements (Clauses 4 and 5)

The standard opens with impartiality and confidentiality. A laboratory’s results are worthless if commercial, financial or internal pressure can bend them, so the standard requires structural safeguards that protect the integrity of results — and it requires you to keep customer information confidential. The structural requirements then pin down the basics: the laboratory is a legal entity responsible for its work, its activities and scope are defined, and management and technical functions have the authority and resources to do the job.

Resource requirements (Clause 6)

This is where competence starts to become concrete. Personnel must be competent for the specific activities they perform, and that competence must be authorised, monitored and recorded — “we trained them once” is not the standard. Facilities and environmental conditions must be controlled and monitored wherever they can affect a result. Equipment must be calibrated, maintained and subject to records and intermediate checks. And at the heart of this clause sits metrological traceability: results must be traceable to the International System of Units through an unbroken chain of calibrations, each contributing to the stated measurement uncertainty, sourced from competent calibration laboratories, national metrology institutes or certified reference materials. A break anywhere in that chain undermines every result that depends on it. The standard also governs externally provided products and services — including, critically, your calibration and proficiency-testing suppliers.

Process requirements (Clause 7)

This is the technical core, and the part that separates accredited laboratories from aspirational ones. It covers the review of requests and tenders; the selection, verification and validation of methods — verifying that you can properly run a standard method, and fully validating any non-standard, laboratory-developed or modified method; sampling, where the laboratory samples; and the handling of test and calibration items, including their condition and chain of custody. It requires evaluation of measurement uncertainty, so that every result carries a defensible statement of how much you can trust it. It requires ensuring the validity of results through internal quality control and external checks such as proficiency testing and interlaboratory comparison. It governs reporting — what a test report or calibration certificate must contain, and how opinions and interpretations are separated from measured results. And it introduces decision rules: when you state conformity to a specification or limit, you must define, document and agree with the customer how measurement uncertainty is accounted for in that pass/fail decision. That single requirement catches many laboratories off guard, because it forces an explicit conversation about risk that was previously left implicit.

Management system requirements (Clause 8)

Finally, the standard requires a management system that supports all of the above — document control, records, actions to address risks and opportunities, improvement, corrective action, internal audits and management review. It offers two routes: Option A, in which you implement the management-system clauses ISO/IEC 17025 sets out directly, and Option B, which you satisfy automatically if you already run a management system compliant with ISO 9001 and meet the standard’s technical clauses. For a laboratory that is part of a larger ISO 9001-certified organisation, Option B often removes a great deal of duplicated effort — a point worth settling early, because it shapes the whole build.

Read as a whole, ISO/IEC 17025 is not a quality-manual exercise with some laboratory flavour. It is a competence standard whose management clauses exist to protect valid results — and treating it the other way round is the single most common reason laboratories struggle.

Which Philippine regulator actually requires ISO/IEC 17025 — and which accepts foreign accreditation

This is the question laboratories ask us most, and the honest answer is that there is no general Philippine legal mandate for ISO/IEC 17025. Republic Act No. 9236, the National Metrology Act of 2003, names the standard as the basis for the national accreditation scheme — not as an obligation on laboratories. The real picture is regulator by regulator, and it is inconsistent enough that laboratories routinely buy the wrong accreditation.

The distinction that costs money is this: some regulators accept accreditation from any ILAC-signatory body, and some accept only the Philippine Accreditation Bureau. If you are accredited by a foreign body and your market is agriculture or FDA-regulated, you may hold a perfectly valid international accreditation that your regulator will not recognise.

Two corrections worth making plainly, because both circulate widely in Philippine laboratory marketing. DOH Administrative Order 2021-0037, governing clinical laboratories, does not mention ISO 15189, ISO/IEC 17025 or PAB anywhere — the obligation is a DOH Licence to Operate plus participation in an external quality assessment programme. And DENR DAO 98-63 neither requires nor credits ISO/IEC 17025; it runs its own recognition scheme. Consultants who tell an environmental laboratory that DENR requires 17025 are selling something the regulation does not ask for. That does not make accreditation worthless to those laboratories — it makes it a commercial decision rather than a regulatory one, and it should be sold as such.

The Food Safety Act of 2013 (Republic Act No. 10611) is also weaker than commonly claimed. Section 30 requires laboratories accredited “in accordance with international standards” but does not name ISO/IEC 17025, and its implementing rules use programme language — steps shall be taken to accredit food testing laboratories — rather than imposing a deadline.

Accreditation, not certification — and why the difference is not pedantry

Certification attests that a management system conforms to a standard. ISO/IEC 17025 requires something harder: demonstrated technical competence to produce valid results for specified tests and calibrations. That judgement can only be made by assessors competent in the methods themselves, and the output is not a pass/fail certificate but a scope of accreditation listing specific tests, methods, ranges and measurement uncertainties.

This is why a body offering you an “ISO 17025 certificate” has already told you what it is. The standard’s own infrastructure does not produce certificates, and a document without a scope attached is not evidence of anything.

The recognition chain runs in three links, and each one is checkable. Your laboratory is accredited against ISO/IEC 17025:2017. Your accreditation body is itself assessed against ISO/IEC 17011:2017, the standard setting requirements for accreditation bodies. And that body is peer-evaluated for signatory status to the ILAC Mutual Recognition Arrangement, which is what makes your results acceptable abroad on the principle of accredited once, accepted everywhere.

The Philippine Accreditation Bureau, a line bureau of the Department of Trade and Industry, holds ILAC MRA signatory status for calibration and testing under ISO/IEC 17025 since 17 November 2005, and for medical testing under ISO 15189 and inspection under ISO/IEC 17020 since 30 September 2019.

One detail worth checking before you commit, because it catches laboratories out: PAB operates a proficiency-testing provider programme under ISO/IEC 17043, but is not an ILAC MRA signatory for that scope. Operating a scheme and holding international recognition for it are different things. If cross-border acceptance is why you are accrediting, confirm the scope is MRA-covered before you sign anything — with any accreditation body, not only PAB.

There is no ISO/IEC 17025:2025. Do not transition to a standard that does not exist

A fabricated “ISO/IEC 17025:2025” is circulating, complete with invented change themes and an invented three-year transition deadline. We traced the most widely copied version to an article published in October 2025 whose byline is, literally, a generative AI tool. It cites no ISO document and no ILAC document, and every specific in it is false.

The verifiable position takes sixty seconds to confirm on ISO’s own catalogue. ISO/IEC 17025:2017 is the current edition — third edition, published 29 November 2017, with a corrected version issued in 2018. Its ISO stage code is 90.93, meaning it was put through systematic review and confirmed as current, most recently in August 2023. A standard being revised would show stage 90.92, or a separate project in development. Neither exists for 17025.

If a consultant offers to transition your laboratory to ISO/IEC 17025:2025, you have learned something useful about that consultant at no cost. The same sixty-second check works for every standard you hold, and we walk clients through it as a matter of routine.

How Sterling delivers ISO/IEC 17025 accreditation

Sterling is a consultancy. We build and prove your laboratory’s competence; the accreditation itself is granted by an accreditation body — PAB in the Philippines, or an international body where a specific customer or export market prefers one — after that body’s own independent assessment. We never issue accreditation, and we are wary of anyone who claims they can. What we do is get your laboratory ready to pass a real assessment the first time, and we deliver that through Sterling OS, our delivery operating system. Its components map cleanly onto the shape of an accreditation project.

Design is our guided mode, for laboratories with the internal capacity and technical staff to do much of the implementation themselves. We architect the whole system — scope definition, method validation plans, uncertainty-budget frameworks, the traceability strategy, the quality manual and procedures, the competence and authorisation scheme — and your team executes against it with our review at each gate. You keep the knowledge in-house, which matters for a laboratory that has to sustain accreditation for years.

Drive is our done-for-you mode: we develop, implement and manage the build end to end. For laboratories that are short-staffed, working to an aggressive head-office deadline, or attempting accreditation for the first time without a metrology specialist on the payroll, Drive puts our practitioners inside the project — writing the methods, constructing the uncertainty budgets, running the trial audits, and taking the technical weight off a team that still has samples to process every day.

Sustain is what happens after the assessment team leaves. Accreditation is not a one-time event; it is maintained through surveillance and reassessment cycles, and it is lost by laboratories that let their proficiency-testing schedule slip, their competence records lapse or their corrective actions pile up. Sustain keeps the system alive — managing the PT calendar, the internal-audit programme, the equipment calibration schedule and the management reviews — so your accreditation is never at risk when the next surveillance visit arrives.

Automate is the digital layer. We deploy Effivity — a compliance platform included with our consulting engagement — together with Vegam AI, to run the parts of ISO/IEC 17025 that are pure administrative drag if you do them on paper: document control, equipment and calibration scheduling with due-date alerts, personnel competence and authorisation records, nonconforming-work and corrective-action tracking, and internal-audit management. The technical judgement stays with your analysts; the record-keeping that assessors scrutinise becomes reliable and instant to produce.

Revise is our transition and change service. The 2017 edition is stable, so there is no forced re-transition on the horizon — but laboratories still change. When you extend your accredited scope to new parameters, add a site, adopt a new method, or need to migrate a legacy system onto a current one, Revise handles the change without putting your existing accreditation at risk.

Underneath the components sits a discipline we do not compromise on: we do not schedule your accreditation assessment until your laboratory has cleared our own internal audit against the same criteria the assessors will use — and, where your scope calls for it, produced satisfactory proficiency-testing results and defensible measurement-uncertainty budgets. That is the mechanism behind our confidence, not a slogan. We would rather tell you the laboratory is not ready than send it into an assessment it will fail.

Timeline and the real cost drivers

The honest answer to “how long will this take?” is that it depends on how far your laboratory already is from the standard, and on how much of the technical evidence — validated methods, uncertainty budgets, competence records, proficiency-testing history — you can put on the table. Anyone who quotes you a fixed number of days for laboratory accreditation is telling you something about their honesty, not their speed: accreditation assessment has its own recognised duration norms, and the technical evidence the assessors need cannot be manufactured overnight.

As realistic planning ranges: a small, single-discipline laboratory with a tightly defined scope and reasonably mature equipment and records should think in terms of several months of focused preparation before it is ready for assessment. A mid-sized laboratory spanning several methods or disciplines will run longer. A large, multi-site or multi-discipline laboratory, or one starting close to scratch, should plan across a longer horizon still. And in every case, the accreditation body’s own assessment, the closure of any findings, and its decision to grant accreditation sit on top of your preparation time — that cycle is outside any consultant’s control, which is exactly why we insist on you being genuinely ready before it starts.

On cost, the consulting corridor above is a planning guide; your exact quote is set by proposal, because a laboratory accreditation figure that ignores your actual scope is meaningless. What we can be transparent about are the drivers that move it:

• Scope — the number of methods, parameters and matrices you want on your accredited scope is the single biggest lever.
• Testing, calibration, or both — different technical disciplines carry different validation and traceability burdens.
• Number of sites and locations — each adds assessment surface and coordination.
• Current maturity — an established laboratory with validated methods and calibrated equipment starts far ahead of a new build.
• Metrological traceability status — whether your equipment already has traceable calibration from competent sources, or the chain has to be rebuilt.
• Proficiency-testing requirements — the availability and cost of relevant PT schemes for your parameters.
• Delivery mode — guided Design versus done-for-you Drive.
• Choice of accreditation body — PAB or an international body, each with its own fee structure.
• Whether you deploy software — automation changes the ongoing cost of maintaining accreditation.

For a proposal built around your actual scope rather than a generic template, talk to us and we will scope it against your methods and sites.

Common mistakes that cost laboratories their accreditation

After preparing laboratories across many disciplines, the failure patterns are predictable — and almost all of them come from treating ISO/IEC 17025 as a paperwork standard rather than a competence standard.

Buying a manual and mistaking it for a system. The most expensive mistake a laboratory can make is to purchase a quality-manual template, populate it, and assume accreditation follows. It does not. Assessors watch your analysts run methods, interrogate your uncertainty budgets and check your traceability chain. A manual that describes a laboratory you are not actually running is worse than no manual, because it advertises the gap.

Neglecting the technical clauses. Laboratories with a strong general management culture often sail through the management-system requirements and then stall hard on method validation, measurement uncertainty and traceability — the parts that require genuine metrological competence. This is precisely where many general ISO consultants cannot help, because building a defensible uncertainty budget is a specialist skill, not a documentation task.

Breaking the traceability chain. Sourcing calibration from a provider that is not itself competent or accredited quietly undermines every result that depends on that equipment. Traceability is only as strong as its weakest link, and assessors follow the chain link by link.

Issuing statements of conformity with no decision rule. Since the 2017 edition, stating that a result passes or fails a limit without a documented, customer-agreed decision rule that accounts for measurement uncertainty is a direct nonconformity — and one that appears constantly, because the practice of reporting bare pass/fail is deeply ingrained.

Under-investing in ensuring validity of results. A laboratory that cannot show ongoing quality control and satisfactory proficiency-testing performance has no evidence that its competence is stable over time. Accreditation is a claim about consistency, and consistency has to be demonstrated, not asserted.

Confusing accreditation with certification — and falling for a mill. ISO/IEC 17025 laboratories are accredited, not certified. Any body offering to sell you a “17025 certificate” quickly, without an assessment of your actual methods, is not an accreditation body, and the document it issues carries no recognition. This is the same shortcut economy Sterling exists to counter: a worthless mark that fails the moment a serious customer checks it.

Under- or over-scoping. Accrediting parameters you rarely run wastes money and assessment effort; leaving out parameters your customers actually buy leaves revenue on the table. Scope is a commercial decision as much as a technical one, and it deserves to be made deliberately at the start.

Why laboratories choose Sterling

Sterling brings more than twenty years of implementation experience and over 8,100+ clients across more than 60 countries to laboratory accreditation — but the reason laboratories specifically choose us for ISO/IEC 17025 is narrower and more practical than a client count.

We can actually do the technical side. Plenty of consultancies can write you a quality manual. Far fewer can sit with your analysts, build measurement-uncertainty budgets that stand up to an assessor, design a method-validation programme, and construct a traceability strategy that holds. That metrology competence is where ISO/IEC 17025 accreditation is genuinely won or lost, and it is what we bring to the table.

We are honest about what accreditation is. We will tell you plainly that we do not issue it, that it is granted by an accreditation body after a real assessment, and that we will not send you into that assessment before you are ready. In a market with no shortage of operators promising fast, cheap marks, that honesty is the differentiator — because the laboratories that come to us have usually already learned what the cheap route is worth.

We are local, known by name and accountable. Sterling’s Philippine engagements are run by our own consultants — Mark, Zia and Ann lead our delivery here — out of our Makati office, working in your time zone and, where needed, coordinating directly with an overseas head office in English. You are not handed to a rotating offshore queue; you get one accountable practitioner who owns the outcome.

We stay after the certificate. Accreditation is a multi-year commitment, and our Sustain engagements exist precisely so that the system we built with you does not decay between surveillance visits. We are interested in your laboratory holding accreditation for the long run, not in a one-off document. To start a conversation scoped to your laboratory, get in touch.

Frequently asked questions about ISO/IEC 17025 accreditation in the Philippines

Is ISO/IEC 17025 a certification or an accreditation?

It is an accreditation. Laboratories are accredited — not certified — because ISO/IEC 17025 is a competence standard, and an accreditation body assesses the specific technical activities on your scope, not just the existence of a management system. This is an important distinction: anyone offering to “certify” your laboratory to ISO/IEC 17025, or to sell you a certificate without assessing your methods, is misdescribing the standard, and the document they issue would carry no real recognition.

Is ISO/IEC 17025 accreditation mandatory in the Philippines?

There is no blanket law requiring every laboratory to hold it, so in the strict sense it is voluntary. In practice, the demand comes from customers, regulators and export markets that will not accept unaccredited results — which for many laboratories makes it effectively required to compete. Several regulatory programmes also recognise or prefer accredited results within their domains; confirm the current criteria with the relevant authority for your specific field, and remember that a government recognition or licence is a separate thing from accreditation.

Who accredits laboratories in the Philippines?

The national accreditation body is the Philippine Accreditation Bureau (PAB), under the Department of Trade and Industry. PAB is a signatory to the ILAC Mutual Recognition Arrangement, which is what carries international recognition for PAB-accredited results. Some Philippine laboratories also, or instead, hold accreditation from an international accreditation body where a particular customer or destination market prefers it — a choice worth making deliberately, based on where your results need to be accepted.

What is the difference between ISO/IEC 17025 and ISO 9001?

ISO 9001 is a general quality-management-system standard that any organisation can hold; it says nothing about whether your specific test results are technically valid. ISO/IEC 17025 is a laboratory-competence standard that does — it addresses method validation, measurement uncertainty, traceability and the validity of results, which ISO 9001 does not reach. In fact, if your laboratory already runs an ISO 9001 system, you can use it to satisfy the management-system clauses of ISO/IEC 17025 under Option B, then add the technical requirements on top.

Do we need ISO/IEC 17025 or ISO 15189 for a medical laboratory?

For a medical or clinical laboratory, the appropriate standard is normally ISO 15189, which is written specifically for medical laboratories and their quality and competence requirements. ISO/IEC 17025 is the standard for testing and calibration laboratories more broadly. If your work spans both, or you are genuinely unsure which applies, our Select the Standard tool — or a short conversation with our team — will settle it quickly.

How long does ISO/IEC 17025 accreditation take?

It depends on your scope and your starting maturity, and we will not quote you a fixed number of days, because laboratory accreditation cannot honestly be promised on a countdown. As planning ranges, a small single-discipline laboratory should expect several months of preparation; a multi-discipline or multi-site laboratory, longer. On top of your preparation sits the accreditation body’s own assessment, findings closure and decision cycle, which is outside any consultant’s control. We build the timeline around your actual scope after we have seen it.

What drives the cost of ISO/IEC 17025 accreditation?

The main drivers are the size of your accredited scope (number of methods, parameters and matrices), whether you do testing, calibration or both, the number of sites, your current maturity, the state of your metrological traceability, the availability of relevant proficiency-testing schemes, your chosen delivery mode, the accreditation body you select, and whether you deploy software to run the system. We price by proposal against your real scope rather than publishing a generic figure — contact us for an estimate built around your laboratory.

What is metrological traceability and why does it matter so much?

Metrological traceability is an unbroken chain of calibrations linking your measurement result back to the International System of Units, with each step contributing to the stated measurement uncertainty. It matters because it is what makes your results comparable and defensible — a result with no traceable chain is a number with no anchor. Assessors follow the chain link by link, which is why sourcing calibration from competent providers, and evaluating uncertainty properly, sits at the heart of accreditation.

What are decision rules under ISO/IEC 17025:2017?

A decision rule describes how your laboratory accounts for measurement uncertainty when it states that a result conforms — or does not conform — to a specification or limit. Since the 2017 edition, when you provide a statement of conformity you must apply a documented decision rule and agree it with the customer, so that everyone understands the risk built into a pass/fail call near the limit. It is one of the requirements laboratories most often overlook, because reporting bare pass/fail without stating the rule was long-standing practice.

Do we need proficiency testing to get accredited?

In most cases, yes. Ensuring the validity of results is a core requirement, and proficiency testing or interlaboratory comparison is the principal external means of demonstrating that your results are accurate and stable over time. Where suitable schemes exist for your parameters, satisfactory participation is normally expected as evidence of ongoing competence. Part of our scoping work is confirming which PT schemes apply to your parameters and building them into the plan before assessment, not after.

Our overseas head office requires our Philippine laboratory to be accredited — can Sterling manage that?

Yes; it is one of our most common engagements. We translate a group mandate into an accreditation scope PAB (or your chosen international body) will assess, coordinate directly with your overseas quality function in English, and run the build to a schedule that satisfies both the local accreditation body and the parent’s expectations. Our done-for-you Drive mode is often the right fit here, because it puts our practitioners inside the project when a foreign deadline leaves your local team no slack.

Will accreditation from PAB be accepted abroad?

Because PAB is a signatory to the ILAC Mutual Recognition Arrangement, results from a PAB-accredited laboratory carry recognition that extends internationally, reducing or removing the need for re-testing in markets the arrangement reaches. For most export and cross-border purposes PAB accreditation is well recognised. If a particular customer or destination market specifies a named accreditation body, we will factor that into the choice at the scoping stage so you accredit once, correctly, for where your results actually need to travel.

Is training included with Sterling’s ISO/IEC 17025 consulting?

Every Sterling engagement includes live internal auditor training for your audit team and preferential access to Sterling Academy, with complimentary ISO/IEC 17025 awareness training for your people as part of the engagement. Special pricing applies to the wider catalogue — Nonconformity Management, Documented Information Management and Risk Management — through your Sterling consultant. Learners who complete a course and its final exam receive a numbered Certificate of Completion, verifiable online, and the completion records serve as evidence for clause 6.2.

Last updated: July 2026 · Reviewed by Mark Santos, Lead Auditor (Metro Manila), Sterling International Consulting.