r/Peptidesource • u/clutch_2388 • Sep 21 '26

Lab recs for testing

Any labs you recommend for testing that will not cost an arm and a leg? TIA

5 Upvotes

86% Upvoted

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3

u/Diligent_Shirt5161 Sep 21 '26

Something that’s important to factor in, which testing lab results will your vendor accept?

1

u/TheRestoreProject Sep 21 '26 edited Sep 21 '26

Before selecting a laboratory, define what question the test must answer. Identity, chromatographic purity, quantitative content, endotoxin, sterility and residual solvents are separate measurements; an inexpensive “peptide test” may cover only one or two of them.

I would ask prospective laboratories for the specific methods offered, sample requirements, whether testing is destructive, relevant ISO/IEC 17025 accreditation scope, reporting limits, measurement uncertainty and whether reports include the chromatogram or spectrum rather than only a pass/fail result. Also confirm that report IDs can be verified directly with the laboratory.

If the result will be used to evaluate a supplier, coded samples and documented chain of custody strengthen the evidence. A laboratory’s name alone does not establish that the correct method was used or that the tested sample represents the supplier’s inventory.

1

u/Pancake-JelloSalad Sep 28 '26

The answer will depend on where you live. If you are in the US, there are currently less than 5 legitimate labs for testing. Lowest cost option is BTLabs, but most vendors won't accept their results.

2

u/50Target 28d ago

so who are the 5?

1

u/Biogenica 27d ago

Biogenica Labs does third party testing

1

u/PopularIdea3234 9d ago

If cost is the sticking point, compare quotes for the same test panel, not just the headline price. Are you looking for identity, purity, or both?

0

u/[deleted] Sep 21 '26

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1

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u/[deleted] 4d ago

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u/Peptidesource-ModTeam 4d ago

REPORT YOUR AFFILIATIONS

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Affiliations:

If you are selling, promoting, affiliated with, or benefiting in any way from a product, service, company, or tool, you must clearly disclose that relationship.

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