Guide · 6 min read
How to verify a Freedom Diagnostics COA
Freedom Diagnostics Testing issues a large share of the COAs you'll see on research-peptide sites, and it runs a public lookup that lets anyone check a report against its own records. Here's how to use it, and how to read what you find.
Find the Search Code
Every Freedom Diagnostics COA has a small table at the top right. Look for the field labeled Search Code. The lab explains the format on its lookup page: the first four characters of the client's company name, followed by the accession number. A report for a client called "Example Labs" with accession number 2603170030 would carry the Search Code EXAM2603170030.
The same table shows the client name, accession number and the dates the sample was received and reported. Note them down; you'll compare them in a moment.
How to verify a Freedom Diagnostics COA, step by step
- Open the lab's lookup page yourself. Go to freedomdiagnosticstesting.com and open the Certificate of Analysis Lookup. Don't rely on a link from the seller.
- Enter the Search Code. Codes aren't case-sensitive, but spaces break the match, so remove them. You can also search by accession number or company name.
- Open the matching report. If there's no match, re-type the code carefully before drawing conclusions.
- Compare field by field. Client name, product, accession number, dates, purity, identity, net content and any endotoxin result should match your copy exactly. A COA whose client name is a different company than the one selling to you deserves a question.
- Check the numbers. Enter them in the free COA checker to confirm the mass fits the compound and the purity and quantity are believable.
How to read a Freedom Diagnostics COA
Public Freedom Diagnostics reports follow a consistent layout, which makes edited copies easier to spot:
- Sample Summary: product, purity, identity (confirmed or not), net content and appearance.
- Analytical Results: identity by LC-MS, purity by HPLC-UV, and net content in milligrams. The method line names HPLC with UV detection coupled with mass spectrometry.
- Endotoxin, on some reports: an LAL assay result with the assay sensitivity.
- Multi-vial results, on some reports: separate purity and content figures for vial 1, 2 and 3. These are the most informative reports, because they show how much the fill varies within a lot.
- A chromatogram and a mass confirmation image. A copy with these sections missing or cropped is incomplete.
Watch the lot field and the product name
Two details trip people up:
- Lot isn't always a lot number. On some public reports the lot field holds a cap color, such as "Red Cap" or "Blue Cap". That describes the vial the client sent, not a manufacturing batch, so it can't prove your vial came from the tested batch.
- The product may be a code name. Gray-market GLP compounds are often submitted under house names. One public report lists its product only as "GLP RT". The identity line then repeats the code name, which proves nothing on its own. Check the reported mass against the real compound: retatrutide should read near 4,731.4 Da. Our peptide reference pages list the masses.
What a verified Freedom Diagnostics COA proves
A match shows the lab tested a sample for that client and reported those results. It doesn't show that the sample came from your batch, that the vial was bought anonymously rather than picked by the seller, or anything about tests that aren't on the report. Sterility, for example, is a separate test from endotoxin.
On accreditation, read the lab's own wording carefully. Its website describes compliance with ISO 9001 quality-management principles and GLP principles. That is different from ISO/IEC 17025 accreditation, the standard written specifically for testing laboratories.
Net content: the number people skip
Freedom Diagnostics reports usually give net content in milligrams, which tells you whether a "10 mg" vial really holds about 10 mg. Public reports show fills that vary in both directions, and multi-vial reports show the spread between vials. Our guide to net peptide content explains what range is normal and how the checker grades it.
Found the report? Check whether its numbers make sense for the compound.
Open the COA checker →Sources
- Freedom Diagnostics Testing: Certificate of Analysis Lookup: The lab's lookup page and its explanation of the Search Code format. Checked November 2, 2026.
- Example Freedom Diagnostics COA, retatrutide 20 mg (vendor-hosted copy; verify it with the lab before relying on it): Shows the Search Code, accession number, lot field, net content and endotoxin sections.
- ISO/IEC 17025: testing and calibration laboratories: The accreditation standard specific to testing labs.
- PeptideCOACheck methodology: How the checker scores the numbers on a COA.
Last updated . Written and maintained under our editorial policy. Found an error? See corrections.
Frequently asked questions
Where is the Search Code on a Freedom Diagnostics COA?
In the table at the top right of the report, in a field labeled Search Code. It's the first four characters of the client's company name followed by the accession number.
What if the Freedom Diagnostics lookup finds nothing?
Re-enter the code without spaces (it isn't case-sensitive), or search by accession number or company name. If nothing matches, treat the COA as unverified and ask the seller for the original.
Is Freedom Diagnostics ISO 17025 accredited?
Its website describes compliance with ISO 9001 quality-management principles and Good Laboratory Practice principles. That isn't the same as ISO/IEC 17025 accreditation, the standard written for testing labs. If accreditation matters to you, ask the lab for its certificate.
Does the lot field on a Freedom Diagnostics COA identify my batch?
Only if it holds a real lot number that's also printed on your vial. On some public reports the lot field shows a cap color such as Red Cap or Blue Cap, which can't tie the report to a production batch.
PeptideCOACheck is not affiliated with Freedom Diagnostics Testing. Educational content only. Not medical advice.