Chromate review: peptide tests, published methods, COA verification and how to order

What Chromate is and where it is based

Chromate is an analytical testing service in Hudson, New Hampshire, USA. It started in the fitness and supplement world. Its home page describes supplement analysis for the health and fitness community, with the aim of “keeping manufacturers honest”. Today it tests research peptides, SARMs, other research chemicals and supplements. The chromate.org domain was registered in 2021.

Finnrick, a rating site, published more than 670 Chromate tests across 15 peptides between December 2024 and July 2026.

Item	What Chromate publishes
Location	Hudson, New Hampshire, USA
What it tests	Peptides, SARMs, research chemicals, supplements
Default method	HPLC, qualitative and quantitative
Endotoxin	Kinetic chromogenic LAL, results in EU
Sterility	Membrane filtration and incubation, per USP <71>
Published turnaround	No figure
Verification	Chromate Verify: job number plus access code
Prices	Published per compound on the services page
ISO/IEC 17025	None claimed

Tests and methods Chromate lists

The services page states: “All tests are qualitative and quantitative analyses by HPLC unless otherwise specified.” It lists:

• Research peptides, including the incretin peptides semaglutide, tirzepatide, retatrutide, mazdutide, survodutide and liraglutide, the amylin analogue cagrilintide, growth hormone secretagogues, and hGH with or without dimer detection.
• Research chemicals such as aromatase inhibitors, SERMs and PDE5 inhibitors, plus 16 SARMs.
• Supplements: creatine, TUDCA, melatonin and olive oil biophenols by the IOOC method.
• Microbiology: endotoxin and sterility.
• Variance testing: extra vials, capsules or tablets from the same batch.

Residual solvents, TFA and blends are not listed. Unlisted compounds are quoted on request.

Chromate’s published method details

Chromate answered Finnrick’s methodology questionnaire on 12 January 2026. Its answers say:

• Quantity is measured against an external reference standard, by UV.
• The standard is injected in replicate, with a system suitability limit of RSD below 0.3%.
• Purity and quantity are measured independently.
• The stated error is 2–5%.
• Quantity is reported as recovered mass, rounded to four significant figures.
• MS is used for characterisation or for compounds without a UV chromophore.

Read our guide to peptide test accuracy to see what a 2–5% error means for a vial result.

How identity is confirmed

For standard peptide tests, Chromate’s reports identify the peptide by HPLC-UV, which means matching retention time against a reference standard. Its methodology answers say MS is kept for characterisation or for compounds a UV detector cannot see. A retention time match is weaker evidence than a mass match, because two peptides can elute close together. If you need a mass result, ask before you order. Our guide to LC-MS identity explains the difference.

Endotoxin and sterility at Chromate

Endotoxin is measured by kinetic chromogenic LAL, with results in EU. The services page states a sensitivity of 0.0001 ng of LPS.

The services page describes sterility as membrane filtration and incubation per USP <71>, covering aerobic and anaerobic microbes and yeast. It does not state the incubation time. USP <71> incubates for 14 days, so confirm the incubation period and the number of units tested with the lab. Peptides need at least one vial for HPLC, plus additional vials for microbiology.

Chromate turnaround

Chromate gives no turnaround figure. The site says results are made available promptly. Ask for an estimate when you order, and allow longer for a sterility test, which needs an incubation period.

How to verify a Chromate COA, step by step

Chromate Verify returns the lab’s own copy of the report, which you can compare with a seller’s copy.

1. Find the job number (up to five digits) and the access code on the COA.
2. Open chromate.org yourself and choose Verify in the site header.
3. Enter the job number and access code.
4. Compare the portal’s copy with yours: compound, results, specification and verdict, received and analysis dates.
5. Check the vial photo. On the reports we read, it is tied to the job number.

There is no public list to browse; each report is checked on its own. Our COA verification guide covers the checks that apply to any lab.

How to order Chromate testing

1. Pick tests from the services page and email the lab to order. There is no online cart.
2. Pay by credit card, CashApp, Venmo, Bitcoin, or Apple or Google Pay.
3. Chromate sends the shipping address once payment is complete.
4. Label each sample with its name and batch, put a slip with your email in the package, and send it by any courier.
5. Collect the results through the Verify portal.

For powders, Chromate asks for 200–1,000 mg in a small bag or a 2 mL autosampler vial; for liquids, 0.5–1 mL.

Who Chromate suits

Chromate suits buyers who want:

• one lab for peptides, SARMs, research chemicals and supplements;
• a published price for every compound;
• published method details, including a stated error;
• a one-page report with a specification, result and verdict.

Ask first if you need a mass-spectrometry identity result on a standard peptide report, residual solvents or TFA, or a published turnaround. Compare other labs in peptide testing labs compared and Janoshik alternatives.

How HK Analytical differs

Our identity result is LC-MS, with the expected and observed mass and the error. Our panel includes residual solvents, counter-ion (TFA, acetate) and Sterility (USP <71>, 14 days). Every number comes with its raw data, in a signed record you can check on /verify. Results within days of receipt. Sterility (USP <71>, 14 days) is the one test that takes 14 days, because the method incubates for 14 days. We do not hold ISO/IEC 17025 accreditation. See the example report and the comparison table.