How we verify every batch

For research peptides, quality is the whole game

With research compounds, the biggest real-world risk usually isn't the molecule — it's the material.

Two vials can carry the same name and be very different inside: different purity, the wrong compound entirely, or contamination that never shows up on a label. Published research is run on controlled, high-grade material; a lot of what circulates in the wider market is not. That gap is exactly what verification closes — so we test every batch and show you the proof.

Four checks on every batch

Third-party, in the U.S.

Testing is done by an independent laboratory in the United States — not in-house. Independent results carry more weight precisely because they're not ours to influence, and U.S. testing means a consistent, accountable standard you can trace.

What's on a CoA — and what each line means

A Certificate of Analysis is the lab's report for a specific lot. Here's a sample, annotated so you know what you're looking at:

• Compound & lot — the exact product and the specific batch. The lot ties the certificate to the vial in your hand.
• Identity — confirms (by mass) it's the right peptide.
• Purity — the headline number; the share of the sample that is the target compound.
• Endotoxin — contamination screen; lower is better, with a hard pass/fail limit.

For the separate editorial rules used to compare suppliers, see how Tuned Research compares research suppliers.

How we write about compounds

Our compound pages summarise published research, and we hold the writing to the same standard as the lab work:

• Every claim is traceable. Statements about how a compound works trace to named primary sources — peer-reviewed papers and clinical-trial records — listed on each page.
• We don't dress up community claims as science. Where the only basis for a figure is anecdote or community protocol, we say so plainly rather than implying a study exists.
• We don't provide medical or human-use guidance. Published findings are presented as research evidence, never as instructions or recommendations.
• We date our pages. Each page shows when it was last reviewed so you can judge how current it is.

What testing does and doesn't tell you

A CoA verifies what's in the vial — purity, identity, contamination. It does not establish that a compound is safe or effective for any use, and for most research peptides there is limited or no human safety data. These are research compounds, sold for laboratory research only — not drugs, and not for human consumption.

Reporting an error

If you spot something on a CoA or a compound page that looks wrong, tell us — accuracy matters more than being right. Contact us with the lot number or page and we'll review it.