Verified by Science
Lab Results & Quality Assurance
Every compound we supply is independently verified by certified third-party laboratories using HPLC and Mass Spectrometry. A Certificate of Analysis confirming purity and identity is issued for each lot — before it ever leaves our facility.
Our Testing Process
From synthesis to certified shipment
Quality is built into a three-step chain of custody. No lot is released for sale until each step is complete and documented.
Synthesis
Each compound is synthesized to a defined specification under controlled conditions. A unique lot number is assigned so every batch is fully traceable from production through to shipment.
Third-Party HPLC/MS Testing
A sample from every lot is sent to an independent, certified laboratory. High-Performance Liquid Chromatography (HPLC) confirms purity while Mass Spectrometry (MS) verifies molecular identity and weight.
COA Issued Before Shipment
No lot is released until its Certificate of Analysis is on file. The COA documents the lot number, test methods, measured purity, and a pass/fail result — issued before the product ever ships.
What We Test For
Five quality markers on every Certificate of Analysis
Purity is only part of the picture. Each lot is screened across multiple analytical parameters to confirm it meets a research-grade standard.
Purity (≥99%)
HPLC quantifies the proportion of the target compound relative to impurities. We hold our research compounds to a ≥99% purity threshold, with the exact measured figure recorded on each COA.
Identity Confirmation
Mass Spectrometry confirms the molecular weight matches the expected structure, verifying the compound is exactly what the label states and free of misidentification.
Heavy Metals Absent
Samples are screened for heavy-metal contaminants such as lead, arsenic, cadmium, and mercury to ensure they fall below detectable thresholds for research-grade material.
Sterility (Injectable-Grade)
Lyophilized compounds intended for reconstitution are assessed for microbial contamination so that, once reconstituted under sterile technique, they remain suitable for laboratory research.
Endotoxin Testing
Bacterial endotoxin (LAL) testing screens for pyrogenic contaminants — a critical quality marker for any compound handled in sensitive in vitro research applications.
Sample Certificate of Analysis
What a Coastal Bio Labs COA looks like
Below is an illustrative example. Request the real COA for any product’s current lot and we’ll email it within 24 hours.
Coastal Bio Labs
Certificate of Analysis
- Product
- BPC-157 5mg
- Lot Number
- CBL-2024-0847
- Test Method
- HPLC / MS
- Date of Analysis
- October 14, 2024
- Measured Purity
- 99.7%
Sample document for illustration only. Lot number CBL-2024-0847 is an example. Actual certificates are issued by independent third-party laboratories for each production lot.
Frequently Asked Questions
Questions about our testing
What is an HPLC test?
High-Performance Liquid Chromatography (HPLC) is an analytical technique that separates the components of a mixture and measures their relative amounts. For a research peptide, HPLC quantifies how much of the sample is the target compound versus impurities — producing the purity percentage you see on a Certificate of Analysis.
Can I request my product’s COA?
Yes. Every lot we ship has a Certificate of Analysis on file. You can view available COAs on our COAs page, use the "Request COA" button on any product page, or contact us with your product and lot number and we will provide the corresponding documentation.
How often are products retested?
Testing is performed on a per-lot basis. Each new batch of a compound is independently tested before release, so the COA always corresponds to the specific lot you receive rather than a generic or historical sample.
Are your peptides tested for sterility?
Lyophilized compounds intended for reconstitution are assessed for microbial contamination and, where applicable, bacterial endotoxins. This helps ensure that material handled under proper sterile technique remains suitable for in vitro laboratory research.
Who performs the laboratory testing?
All analytical testing is carried out by independent, certified third-party laboratories with no affiliation to Coastal Bio Labs. We do not test in-house, which keeps the results objective and verifiable.
Research with compounds you can verify
Every product in our catalog ships with per-lot, third-party documentation. Browse the full range of research-grade peptides and compounds.
Shop Research Compounds