Quality & Testing
How LYFE Science verifies every batch of research peptides: independent third-party analysis, published certificates of analysis, and documentation you can check against the vial in your hand.
Our testing process
Purity and identity are the two questions that matter for a research peptide: is the sample actually the target compound, and how much of it is the compound versus impurities. We answer both with independent analysis on every production lot, and we publish the result rather than asking you to take it on faith.
Independent analysis
Each production lot is sent to an independent third-party analytical laboratory, not tested only in-house.
HPLC for purity
High-performance liquid chromatography measures the percentage of the sample that is the target peptide.
Mass spec for identity
Mass spectrometry confirms the molecule matches the expected mass, so you know it is the right compound.
COA on record
The certificate is published per lot and matched to the lot number printed on your vial.
What each test tells you
Purity (HPLC)
The percentage of the sample that is the target peptide, measured by how cleanly it separates on the column. Higher is better and impurities are visible.
Identity (mass spec)
Confirms the molecule weighs what the target peptide should weigh. A pure sample of the wrong compound still fails identity.
Lot traceability
The lot number links the certificate to the exact vial you received, so the documentation is specific, not generic.
See it and verify it yourself
We publish lot certificates on the Batch Verification & COAs page, with an annotated example of the layout so you can read one confidently. If you want to check the work, our guide on reading a Janoshik COA and verifying peptide quality walk through it step by step. A genuine certificate names the testing laboratory, a lot number, and a test date, and the lot number should match the number on your vial.
Honest limits
Testing confirms purity and identity of the material as supplied. It is not a claim about safety or suitability for any use, and these are research materials only, not products for human or veterinary use. See our Research Use Only policy.
Follow along
Research, lab-side
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