ISO 17025-Accredited vs Unaccredited CBD Lab Testing
Side by side
| ISO/IEC 17025-accredited lab | Unaccredited lab | |
|---|---|---|
| Who checks the lab | An outside accreditation body sends assessors to audit it | No one outside the lab, unless a customer or state does |
| What is audited | Staff competence, methods, equipment calibration, record-keeping, impartiality and how results are reported | Unknown; nothing independent to read |
| Who grants it | Accreditation bodies such as A2LA and ANAB | Not applicable |
| Scope | Specific tests on specific product types, listed on a scope document | No scope to check |
| Proficiency testing | Typically part of staying accredited | Optional, rarely shown |
| Does it guarantee honest results | No. It audits the system, not every result | No, and there is less to verify |
| How you check | Look up the lab on the accreditor's directory and read its scope | Nothing to look up; ask what it follows |
| Cost to the lab | Higher: audits, fees, ongoing quality work | Lower, which can show up in cheaper testing |
| Required by states | Some state cannabis programs require it; rules vary | Allowed where a state does not require it |
Pick by use case
- You want a lab report that an outsider has had reason to audit
- You are comparing brands and want one easy test of a COA
- You want to read the lab's scope and see CBD potency and contaminants listed
- You are buying a product you will take every day
- The brand tells you plainly why it uses this lab and shows the method
- The report lists its methods, limits and a batch number you can match
- You want to ask the lab for its method details before you buy
- You accept less proof and know it
What ISO 17025 is and what it audits
ISO/IEC 17025 is the international standard for the competence of testing and calibration laboratories. A lab does not get it by paying a fee. An accreditation body assesses it, and the A2LA page we read (checked October 2026) says cannabis and hemp labs are assessed and accredited to ISO/IEC 17025:2017.
The same page lists the kinds of tests a hemp lab can be accredited for: cannabinoid content (CBD, THC and others), terpene profile, pesticides, residual solvents, heavy metals and microbial contaminants. Those are the panels you would hope to see on a CBD lab report.
Who grants it, and the scope catch
In the United States, A2LA runs a cannabis testing laboratory accreditation program. ANAB, the ANSI National Accreditation Board, is another body that accredits labs. We could not open ANAB's own page this run, so take that as a name to look up, not a claim we have verified.
Accreditation is scope-specific. A lab can be accredited for one set of methods and not for the one that produced your report. So the useful question is not "is the lab accredited" but "is this test on its scope." The accreditor's directory shows the scope.
What accreditation does not promise
An accredited lab can still make an error, and a brand can still hand you a report from the wrong batch. Accreditation checks the lab's system. It does not check the product, and it does not check that the COA in front of you belongs to your bottle.
That is why the batch number on the bottle should match the batch number on the report, and why a single COA for every batch is a yellow flag. An unaccredited lab is not a lie by default. It is a report with less behind it. Our glossary entry on ISO 17025 covers the short version.
State rules, and how to check a lab
There is no single national rule for this. A CASRAI guide we read (checked October 2026) calls testing requirements a patchwork of state programs and a separate federal hemp framework. A search summary we read says some states with cannabis testing rules require labs to be accredited, with most naming ISO/IEC 17025. We have not read each state's rule, so check yours. Our state-by-state guide is a starting point for the law itself.
To check a lab: find the lab name and address on the COA, search that name on an accreditor's directory, open its scope, and look for cannabinoid testing. Then match the batch number to your bottle and check the date. If any step fails, ask the brand.
Where botanCBD sits
We test every batch with a third party and send the batch COA on request. We do not claim a specific lab's accreditation in this page, and we would rather you read the lab line on your own report than take our word. Our COA page is where to ask for the report for your batch.
FAQ
What does ISO 17025 accreditation mean for a CBD lab?
It means an outside accreditation body audited the lab against the international standard for testing labs, for the tests listed on its scope. It covers methods, equipment, staff competence and record-keeping. It does not guarantee any single result.
Is an ISO 17025-accredited CBD lab always honest?
No. Accreditation audits the lab's quality system, not every report. It makes errors easier to find, but you should still match the batch number on the COA to your bottle.
Who accredits CBD testing labs in the US?
Accreditation bodies such as A2LA, which runs a cannabis testing laboratory program assessed to ISO/IEC 17025:2017. ANAB is another accreditor you can look up. Use the body's own directory to confirm a lab.
How do I check if a CBD lab is accredited?
Find the lab's name and address on the COA, then search the accreditor's directory. Open the lab's scope and look for cannabinoid, pesticide and heavy metal testing. A logo on a PDF is not proof.
Do states require CBD labs to be ISO 17025 accredited?
Some state cannabis programs do, and many name ISO/IEC 17025, but rules vary by state and we have not read every rule. Check your state's page on our CBD laws guide and the regulator's own site.
Can an unaccredited lab still give a good COA?
It can, but nothing independent shows it. A report from an unaccredited lab asks you to trust the lab alone, so look for method details, a batch number and the lab's contact information.
Does botanCBD show its lab reports?
Yes. We third-party test every batch and provide the batch COA on request or at /coas. Read the lab name on yours and look it up.
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These statements have not been evaluated by the Food and Drug Administration. botanCBD products are not intended to diagnose, treat, cure, or prevent any disease. Talk with your healthcare provider before starting any new wellness product, especially if you take prescription medications.