HPLC COA Active Content Decoder
Calculate active peptide mass and corrected concentration from certificate-of-analysis values.
Certificate of Analysis Inputs
mg
The advertised mass printed on the vial label (e.g. 5mg, 10mg, 15mg).mg
Actual net peptide content measured by quantitative titration or mass spec.%
Peak area purity percentage reported on the chromatogram.Reconstitution Parameters:
Adjusted True Dosing Forensics
Corrected Syringe Draw Underfilled Vial (-14.0%)
58.6units (0.586 mL)
Drawing the standard unadjusted 50.0 units would result in an accidental 14.7% under-dose. Draw 58.6 units to deliver exactly 2.5 mg of active peptide.
True Active Peptide Mass8.53 mgvs 10 mg labeled
Actual Concentration4.27 mg/mLvs 5.00 mg/mL expected
HPLC Purity vs Net Peptide Content:A Certificate of Analysis showing 99.2% HPLC Purity only means that 99.2% of the organic compounds in the peak are the target sequence. It does NOT mean the vial contains 10.0mg of pure powder. Lyophilized peptides inherently retain 10–15% counter-ion salts (trifluoroacetate/acetate) and residual bound moisture. Always rely on quantitative mass spectrometry for precision calculations.
Recognized Third-Party Testing Laboratories
Janoshik AnalyticalHPLC-MS / Quantitative Titration
Provides 4-digit unique verification keys to confirm report authenticity directly from laboratory servers.
MZ BiolabsLC-MS / High-Resolution Mass Spectrometry
Specializes in quantitative peptide concentration and molecular weight mass confirmation.
Chromate AnalyticalUHPLC Purity & Endotoxin Assays
Performs endotoxin LAL testing alongside chromatographic purity determination.
Freedom AnalyticsMass Spectrometry & Residual Solvents
Evaluates lyophilization residual solvents, sterility, and quantitative milligrams.