Verified Peptide Test Results
A batch-specific Certificate of Analysis records the tests performed on your submitted material. Read the methods and specifications alongside the result.
Comparing supplier claims with measured results
Check that the supplier certificate and independent report refer to the same lot and sample format. Compare results obtained using appropriate methods, including detection wavelength, integration and stated reporting limits.
- HPLC purity is a chromatographic measurement, not net peptide content.
- Mass spectrometry supports identity confirmation but does not establish every structural feature on its own.
- Endotoxin, metals and solvents require their own selected panels.
- Use project-specific acceptance criteria rather than a universal purity threshold.
Ready to test your peptides?
Send your peptide name, sample count, and the tests you need. We return a fixed-price quote, usually within one business day.
- validated analytical methods, independent of any supplier
- 3–5 business days for eligible routine testing
- Traceable COA with chromatograms and method parameters
What your report should identify
Sample and lot identifiers, the analytical method, the measured result and units, applicable specifications, and supporting chromatograms or spectra for the tests ordered. Ask the laboratory about uncertainty and any limits on interpretation.
Independent verification at ACS Laboratory
ACS Laboratory is now part of Smithers. ACS does not sell peptides. 3–5 business days from sample receipt for eligible routine testing. Complex panels, custom methods and stability studies have separately confirmed timelines.
Sample quantity and handling depend on the selected methods and sample format. Obtain written requirements from the laboratory before shipping; there is no single minimum for all tests.