Lab Reports & Certificates of Analysis
Every batch we sell is independently tested by a third-party laboratory. Here's how to read a CoA and what to look for.
Why Certificates of Analysis Matter
A Certificate of Analysis (CoA) is the only way to verify that a research compound is what it claims to be. Without independent testing documentation, you're trusting a label — not science. A proper CoA confirms identity, purity, and that the compound is free of harmful contaminants. For any serious research, it's non-negotiable.
Identity Confirmation
Mass spectrometry confirms the molecular weight matches the target compound
Purity Verification
HPLC analysis quantifies exact purity percentage — we guarantee ≥99%
Safety Assurance
Testing screens for residual solvents, heavy metals, and microbial contamination
Reading a Certificate of Analysis
Here's an example CoA annotated with what each section means and what to look for.
Certificate of Analysis
Analytical Testing Laboratory
ISO 17025 Accredited · DEA Licensed
Report #: ATL-2026-04821
Date: January 15, 2026
Sample Identification
✅ What to look for
A unique batch number ties this report to a specific production run. The molecular formula and weight let you verify they tested the right compound. No batch number = no traceability.
HPLC Purity Analysis
HPLC Chromatogram
🔬 This is the most important section
The HPLC purity percentage tells you how much of the sample is the target compound vs. impurities. Look for the method details (column type, mobile phase, detection wavelength) — these prove the test was actually run. The chromatogram should show one dominant peak. Multiple large peaks suggest degradation or contamination.
Mass Spectrometry (ESI-MS)
⚖️ Identity confirmation
Mass spectrometry confirms the compound's molecular identity. The observed mass should match the expected mass within ±0.1 Da. This is how you know the compound isn't something else entirely — HPLC alone can't tell you what is pure, only how pure.
Physical Properties
🧪 Physical verification
These properties help you verify the compound visually and confirm it dissolves as expected.Endotoxin testing is critical for any in-vitro cell work — high endotoxin levels will confound results.
Analyst: Dr. J. Chen, Ph.D.
Reviewed: Dr. M. Reeves, Director
This report may not be reproduced
except in full without written consent.
🚩 Red Flags in a CoA
If you see any of these, the CoA may be unreliable or fabricated.
⚠️ No batch or lot number
Without a unique batch ID, there's no way to trace the report to a specific production run. A generic CoA could apply to anything — or nothing.
⚠️ Missing method details
A real CoA lists the column type, mobile phase, flow rate, and detection method. "HPLC tested" with no details is meaningless.
⚠️ No chromatogram or reference to one
The raw chromatogram data is proof the test was actually run. If it's not included or referenced, the numbers could be fabricated.
⚠️ Round purity numbers (99.0%, 100%)
Real analytical results have decimals (98.73%, 99.14%). Suspiciously round numbers suggest the report was typed, not generated from instruments.
⚠️ No analyst or reviewer signature
Legitimate labs have named analysts and reviewers who sign off on results. Anonymous reports have no accountability.
⚠️ Report date doesn't match batch date
If the CoA is dated years before or after the batch production, it may have been recycled from a different lot.
Our Testing Process
Step 01
Synthesis
Compound synthesized under GMP-adjacent conditions
Step 02
Sampling
Representative sample pulled from each batch
Step 03
Third-Party Testing
Independent lab runs HPLC, MS, and physical tests
Step 04
Release
Only batches ≥99% purity are approved for sale
Every product ships with a CoA.
We use independent third-party laboratories — never in-house testing. This eliminates conflicts of interest and ensures objective results.
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Every product in our catalog includes a Certificate of Analysis. Verified purity, no exceptions.
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