What a Certificate of Analysis is — and how to read one
A Certificate of Analysis (CoA) is the lab report for a specific lot of material. It documents what the compound is and how pure it is — with measured values, not marketing. Where a batch has been safety-tested, those results appear too.
Lot-specific CoAs, published on the product page
You don't have to take a purity claim on faith. Where a lot has been tested, its measured results appear in the buy box — check the numbers before you add it to your cart.
Every certificate, decoded
Five things to look for on any lot report.
Batch-specific results
Every figure we publish comes from one analyzed batch of material — not a supplier's spec sheet and not an average across production runs.
Test date
The month the independent lab analyzed the batch. Purity and safety results reflect the material as tested at that point.
Labeled vs. measured mass
The stated fill weight next to the actual net peptide content, so you know precisely how much compound is in the vial.
QC result rows
Purity and identity for the lot, plus any safety testing run on that batch — heavy metals, microbial counts, endotoxin — each with its measured value or pass/not-detected result.
Certificate of Analysis
Sample lot report
- Compound
- BPC-157 10mg
- Tested
- May 2026
- Labeled mass
- 10.0 mg
- Measured content
- 10.37 mg
- Purity (HPLC)99.72%
- Identity (MS)Confirmed
- Heavy metals (ICP-MS)Not detected
- Sterility (TAMC/TYMC)Pass
- Endotoxin (USP <85>)0.052 EU/vial
Illustrative layout. Every lot reports mass and purity; safety rows appear for batches that have been safety-tested. Open any product page for that compound's published results.
See the documentation behind every compound
Open a certificate from any product page, or read how AminoStock tests each lot in the FAQ.