The stakes
Why peptide safety & third-party testing matter
Research peptides are only useful when they are what the label says. An impure or misidentified compound undermines reproducibility, wastes materials, and — for research-use-only work — makes results impossible to trust. The single most important question about any vial is therefore simple: is this the right molecule, at the stated purity, free of contaminants? Answering it takes analytical testing, and answering it credibly takes an independent lab with no stake in the outcome.
A supplier grading its own product has an inherent conflict of interest. Independent, third-party verification removes it. That is why every BioThriv batch is sent to Chromate (chromate.org), an outside laboratory, and why we publish the lot codes so anyone can confirm a result at the source rather than take our word for it.
The document
What a COA is — and how to read one
A Certificate of Analysis (COA) is the lab-issued record of the tests run on one specific batch and their results. It is batch-specific: a COA describes the exact lot it names, not the product in general. Reading one is a short checklist:
- Match the lot. The lot/batch number on the certificate must match the code printed on your vial.
- Confirm identity. The compound name and molecular weight should match what you ordered, verified by mass spectrometry.
- Read the purity. Check the reported purity against the ≥99% specification, measured by HPLC.
- Check the screens. Heavy-metal, microbial, and endotoxin results should sit within their stated limits.
The methods
The tests we run on every batch
Identity, purity, and contamination are each measured by an established analytical method. Together they answer “what is it, how pure is it, and is anything else in there?”
Purity
HPLC (High-Performance Liquid Chromatography)
Separates the sample into its components and quantifies the target compound as a percentage — the number behind the ≥99% purity specification.
Identity
Mass Spectrometry
Measures the molecular mass to confirm the batch is the intended peptide and not a substitute or a misfolded/incorrect sequence.
Identity + purity
HPLC-MS
Combines chromatographic separation with mass detection in one run, cross-checking purity and identity against each other for a higher-confidence result.
Contaminants
Heavy-metal screening (to ppb)
Screens for trace metals down to parts-per-billion, confirming they fall within stated limits.
Contaminants
Microbial & endotoxin testing
Checks for microbial load and bacterial endotoxin so the material meets its cleanliness limits at release.
Provenance
Time-locked chain of custody
An ordered, timestamped record from synthesis to assay to release — verifiable per lot, so authenticity is traceable rather than assumed.
The standard
≥99% pharma-grade vs ≥98% research grade
Purity is the percentage of a batch that is the intended compound; the rest is process-related impurity. A widely used “research grade” threshold is ≥98%. Our specification is ≥99% pharma-grade, which simply sets a tighter ceiling on impurities before a batch can be released. Both describe research-use-only material — the difference is the impurity budget the batch is held to. One extra point of purity is a meaningfully smaller impurity allowance, and holding to it consistently is what a specification is for.
The facility
Where and how it is made
Testing is only as trustworthy as the process behind it. Our supplier manufactures under controlled conditions built to keep identity and purity intact from synthesis through release:
- US cGMP process. Current Good Manufacturing Practice — documented, repeatable procedures with quality controls at each step.
- ISO-certified cleanroom. A controlled-environment fill suite that limits particulate and microbial ingress.
- FDA-registered facility. The manufacturing site is registered with the FDA.
- Time-locked chain of custody. Each lot carries an ordered, timestamped record from synthesis to assay to release — the provenance a genuine vial can show and a counterfeit cannot.
The proof
Independent verification by Chromate — and how to check it
Every batch is verified by Chromate (chromate.org), an independent lab. Because the verification is hosted by the lab rather than by us, confirming a result means going to the source. There are three ways to do it:
- Scan the QR. Every vial ships with a QR link that opens the lab's verification for that exact lot.
- Enter the lot code. Type the code into our Verify tool — it resolves the lot and links straight to the certificate.
- Go direct. Look the code up at chromate.org yourself, or browse the full batch wall of every lot we have released.
FAQ
Common questions
What is a Certificate of Analysis (COA)?
A Certificate of Analysis is a lab-issued document that records the tests run on a specific batch of material and their results — typically identity (is it the right molecule?), purity (what percentage is the target compound?), and screening for contaminants. Each BioThriv lot is tied to its own COA so a certificate always describes the exact vial you hold, not a generic product.
How do I read a peptide COA?
Match the lot number on the certificate to the lot printed on your vial. Check that the stated compound and molecular weight match what you ordered, look at the purity result against the ≥99% specification, and confirm the identity method (mass spectrometry) verified the correct mass. Contaminant screens (heavy metals, microbial, endotoxin) should be within their stated limits.
Why does third-party lab testing matter for research peptides?
Independent testing removes the conflict of interest in a supplier grading its own product. A third-party lab has no stake in the result, so its purity and identity findings are a neutral check. It is the difference between a claim and verifiable evidence — and, for research, reproducibility depends on knowing exactly what is in the vial.
What does ≥99% pharma-grade purity mean versus ≥98% research grade?
Purity is the share of the material that is the intended compound; the remainder is process-related impurities. A common "research grade" bar is ≥98%. Our specification is ≥99% pharma-grade, which sets a tighter ceiling on impurities. Both are RUO materials — the difference is the impurity budget the batch must meet before release.
How do I verify a BioThriv batch?
Every vial ships with a lot code and a QR link. Scan the QR or enter the lot code in our Verify tool, or go straight to the independent lab (Chromate, chromate.org) and look up the code. The verification is hosted by the lab, not by us, so you are confirming the result at the source.