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A certificate a seller hands you is not evidence

A PDF can be edited in a browser in about a minute. A purity figure, a batch number, a laboratory logo and a signature are all just pixels in a file that arrived from the person who wants your money. None of it is evidence of anything until you have looked it up on the laboratory's own site yourself.

That single habit is the most useful thing on this page. Everything below exists to support it: which laboratories publish a check you can run, what each one charges, and what an accreditation badge does and does not cover.

Every figure here was read from the laboratory's own site, or from the accreditation body's own registry, on 14 September 2026. Nothing is taken from a directory or a comparison blog. Where a figure is not published, this page says so rather than borrowing one.

The check, in three steps

  1. 01

    Find the verification field

    A real certificate carries something you can type into the laboratory's own site: a task number and key, an accession number, a search code, or a QR code. If there is no such field anywhere on the document, stop. There is nothing to check.

  2. 02

    Go to the laboratory yourself

    Type the laboratory's address into the bar yourself. Do not use the QR code and do not click the link in the seller's email, because both can point anywhere. A cloned verification page is cheaper to build than a real test.

  3. 03

    Match the details, not just the pass

    The compound, the batch or accession number, the date and the amount all have to match the vial in your hand. A genuine certificate for a different batch is the oldest trick in this market.

A laboratory that issues certificates with no public verification is not doing anything wrong. It is serving a business client who does not need one. It does mean that a certificate from that laboratory, forwarded to you by a seller, cannot be checked by you, and should carry exactly as much weight as the seller's own word.

What an ISO 17025 badge actually covers

An accreditation is granted for named tests on named materials, not to a laboratory as a whole. A laboratory can be genuinely accredited and the test you are buying can sit outside the scope. The scope document is public, and almost nobody opens it.

Worked example, checked in the registry

Vanguard Laboratory holds A2LA certificate 6377.01 to ISO/IEC 17025:2017, valid to 30 September 2027. That is real and it is verifiable in A2LA's own directory. We opened the three page scope document. It lists food microbiology by AOAC methods, trace elements by ICP-MS, residual solvents, and preservatives, on food, pharmaceuticals, water, sewage and biosolids.

There is no HPLC peptide purity or identity method anywhere on it. The accreditation covers the heavy metals and residual solvent work inside their larger panels, which is worth having. It does not cover the purity test most people are buying.

This is not an accusation. The laboratory does not claim the scope covers peptides. It is the market that reads an accreditation badge as though it blesses every test on the price list. Check the scope, not the logo.

Of the 6 laboratories below, 2 hold an ISO/IEC 17025 accreditation from a named body with a certificate number. For one of those we opened the scope and it does not cover peptide purity. For the other we could not retrieve the scope, and this page says so rather than assuming.

The laboratories

3 of the 6 publish a price list. The rest quote on request, and two of them are set up for companies rather than for a person with one vial.

Vanguard Laboratory

Olympic Analytical, LLC dba Vanguard Laboratory. Olympia, Washington, United States

A2LA 6377.01

What they run

  • Purity, quantity, identity and solubility
  • Endotoxins, and bioburden by USP 61
  • Fentanyl screening
  • Vial seal integrity
  • Heavy metals screening
  • Sterility, as a separate 14 day test
  • Residual solvents, and a trifluoroacetic acid add-on

Can you check a certificate

Reports are emailed to the address on the order, and the site carries an ID lookup. There is no browsable list of past results.

Published price

Purity only, raw powders
$200
Level 1 Silver: purity, quantity, identity, solubility. 1 vial
$250
Level 2 Gold: Silver plus endotoxins, bioburden, fentanyl, seal integrity. 3 vials
$550
Level 3 Elite: Gold plus heavy metals. 4 vials
$700
Endotoxins on their own
$210
Sterility, 14 day test, one extra vial
$150
Heavy metals on their own
$150
Residual solvents
$150
Fentanyl screening outside a Gold or Elite panel
$50
Trifluoroacetic acid add-on
$50
Bacteriostatic water and pH verification
$200

What the accreditation actually covers

Food microbiology by AOAC methods, trace elements by ICP-MS using EPA 200.8 modified, residual solvent analysis, and parabens and organic acid preservatives. Matrices are food, pharmaceuticals, environmental samples, drinking, surface and waste water, sewage and biosolids.

Peptide purity and identity by HPLC are not on this scope.

  • The only lab here that screens for fentanyl, which is the contaminant most likely to kill somebody.
  • The accreditation is real and it does not cover peptide purity. It does cover the heavy metals and residual solvent work inside the Gold and Elite panels, which is worth something.
  • Payment comes after the sample arrives, by invoice, and reports are held until it is paid.
vanguardlaboratory.comtesting@vanguardlaboratory.com · checked 14 September 2026

Read from the A2LA scope of accreditation document itself, three pages, signed and dated 22 December 2025, on 14 September 2026.

Janoshik Analytical

Janoshik s.r.o.. Czech Republic

No accreditation claimed

What they run

  • HPLC for peptide amount and purity
  • Mass spectrometry screening, as a paid extra rather than the default

Can you check a certificate

Every report carries a task number, a unique key and a QR code that resolve on the lab's own verification page. There is also an opt-in public gallery at public.janoshik.com, where a vendor chooses whether a result appears.

Published price

Blind GLP-1 test: semaglutide, tirzepatide and retatrutide
$360
Human growth hormone: amount, purity, dimer and higher molecular weight proteins
$500
Blind anabolic steroid screening, oils
$145
Blind anabolic steroid and aromatase inhibitor screening, orals
$145
  • The most widely used lab in this market by a distance, and the one whose certificates vendors publish most often.
  • The public gallery is a marketing channel, not a sample of the market. A vendor publishes a result when it passes.
  • Reports in the public gallery render as images, so the numbers cannot be read by a machine.
  • The main site sits behind bot protection, so pages sometimes refuse to load.
janoshik.comchecked 14 September 2026

No accreditation or licence claim appears on the lab's home, services or verification pages, read on 14 September 2026.

Chromate

United States

No accreditation claimed

What they run

  • HPLC, qualitative and quantitative, for everything unless stated otherwise
  • Endotoxin count by kinetic chromogenic LAL, stated as sensitive to 0.0001 ng of lipopolysaccharide
  • Sterility by membrane filtration and incubation, per USP 71

Can you check a certificate

A Verify portal on their own site, by report ID. There is no browsable list.

Published price

Semaglutide, tirzepatide, retatrutide, liraglutide
$300
Cagrilintide, mazdutide, survodutide
$380
BPC-157, TB-500, CJC-1295, ipamorelin, PT-141, melanotan-2, AOD-9604
$180
GHK-Cu, epithalon, DSIP, selank, semax, sermorelin, tesamorelin, thymosin alpha-1
$240
Kisspeptin-10, KPV, melanotan-1, MOTS-c, oxytocin
$380
Human growth hormone, 191aa
$300
Human growth hormone with dimer
$420
Sterility test
$240
Endotoxin count
$240
Each additional peptide vial
$50
  • The clearest published price list of any lab here, compound by compound.
  • Their Testing Project, the unannounced testing programme they describe on the home page, currently shows an empty page reading Check Back Later. The site's copyright still reads 2024.
chromate.orghello@chromate.org · checked 14 September 2026

No accreditation claim found on the site, read on 14 September 2026.

Freedom Diagnostics

Franklin, Tennessee, United States

No accreditation claimed

What they run

  • HPLC for purity and LC-MS for identity, issued together on every certificate

Can you check a certificate

A lookup by search code, accession number, or the exact company name as printed on the certificate. The lab says more than 40,000 certificates are available this way. It answers a question you already have the code for; it is not a directory you can browse.

Published price

No price list published. Ask before shipping anything.

Turnaround

Two to four days on average, as the lab states it

  • Purity and identity always travel together here, which matters: a purity figure with no identity check tells you a vial is 99 percent pure something.
  • No price list is published. Ask before shipping.
freedomdiagnosticstesting.comchecked 14 September 2026

No accreditation claim found on the site, read on 14 September 2026.

MZ Biolabs

Tucson, Arizona, United States

DEA Schedule IIICompanies only

What they run

  • HPLC with ultraviolet detection, combined with mass spectrometry

Can you check a certificate

Certificates go to the client. There is no public lookup or gallery.

Published price

No price list published. Ask before shipping anything.

  • Set up for vendors and businesses rather than individuals.
  • The lab states plainly that its purity testing does not cover activity, sterility, endotoxins, heavy metals or pH. Worth reading twice: a clean purity number says nothing about whether a vial is sterile.
www.mzbiolabs.comchecked 14 September 2026

A DEA Schedule III licence is a controlled substance handling permit, not a testing accreditation. No ISO/IEC 17025 claim appears on the site, read on 14 September 2026.

Colmaric Analyticals

Colmaric Analyticals LLC. St Petersburg, Florida, United States

PJLA 86258

What they run

  • HPLC, within a general contract research offering

Can you check a certificate

Certificates go to the client. No public lookup.

Published price

No price list published. Ask before shipping anything.

  • A contract research organisation serving food, pharmaceutical, cosmetic and supplement companies, not a consumer peptide testing service. No peptide price list and no peptide submission route are published.
  • Named here because it is frequently cited in this market, and because the accreditation is real. Whether the scope covers a peptide purity test is exactly the question, and we could not open the scope document to answer it.
www.colmaricanalyticals.com727-289-4877 · checked 14 September 2026

The certificate number is recorded in more than one independent source and the lab claims it. The scope document itself was not retrieved on 14 September 2026, so what it covers is not stated here.

Checking a source somebody else already tested

Four places collect results. The question that separates them is not how many tests they hold. It is who decided which tests appear.

A seller publishes a certificate when it passes. A site built from seller-published certificates is therefore a gallery of successes, and a pass rate computed from one is flattering and false. A site that buys its own samples has no such problem, and its numbers look worse because they are closer to true.

FinnrickSamples chosen by the tester

Vendor rankings per compound, with dollars per milligram and a rating built from purity and how close the fill was to the claim.

Finnrick sources the samples and sends them to third-party labs itself, and publishes results whether they pass or fail. Nobody selling the product decides what appears.

9,997 tests as of 3 September 2026.carries prices

Their pass bar is 99.5 percent purity with the dose within 35 percent of the claim, which is stricter than most, so the numbers look harsh next to sites built on vendor certificates. That is the point of them.

PeptigritySamples chosen by the seller

Shop scores from community reviews and lab certificates, plus a per-milligram price index read from public storefronts.

The certificates are collected from shops' own channels. Peptigrity says so itself: because shops choose which certificates to publish, the tests reflect the batches a shop has made public.

13,195 lab tests across 631 shops as of 14 September 2026.carries prices

A pass rate computed from vendor-published certificates is a gallery of successes. The price index does not have that problem, because a storefront price is a fact about a public page.

Janoshik public testsSamples chosen by the seller

Individual reports a vendor has chosen to make public.

Opt-in. Many entries carry a supplier's WhatsApp number in the title, which tells you what the gallery is for.

A single page of entries rather than a full database.

Useful for confirming that one specific certificate is genuine. Useless for judging a market, and the reports are images rather than data.

Freedom Diagnostics certificate lookupLookup only

Confirms that a certificate you are holding is real and matches what the lab issued.

Search by the code printed on the certificate, or by the exact company name on it.

More than 40,000 certificates, as the lab states it.

You need the code or the exact company name. It answers a question, it does not let you browse a vendor's history.

Purity on its own does not tell you much

Identity, always alongside purity

A purity figure with no identity check tells you a vial is 99 percent pure something. HPLC gives the purity, mass spectrometry confirms the molecule. One laboratory here issues both on every certificate and never one without the other.

Quantity against the label

Underfilling is the commonest way to cheat, and it is invisible to a purity test. A vial can be 99.6 percent pure and hold two thirds of what the label claims.

Sterility and endotoxins, if it is going under a skin

Neither is part of a purity panel anywhere on this page unless you pay for it separately. One laboratory states outright that its purity testing does not cover sterility, endotoxins, heavy metals or pH. A clean purity number says nothing about whether a vial is sterile.

Contaminants nobody advertises

Heavy metals, residual solvents, and fentanyl. One laboratory on this page screens for fentanyl, which is the contaminant most likely to kill somebody, and it costs $50 as an add-on.

What this page is not

We have not commissioned a test from any laboratory here and we hold no certificate of our own, so nothing on this page is a first-hand measurement. We have no relationship with any of them, take nothing from any of them, and the order they appear in is not a ranking. Where a laboratory publishes no price or no turnaround, this page leaves it blank instead of filling it in from somewhere else.

Nothing here is a recommendation to buy or use any compound. How this site works.