Source comparison
BPC-157 COA Metrics: Testing Comparison
HPLC (High-Performance Liquid Chromatography) Purity. Percentage of target peptide vs impurities and synthesis byproducts ≥98% with chromatogram showing single dominant peak Confirms synthesis cleanliness and absence of truncated sequences or reagent contamina
This comparison does not assign a generated winner or score.
- HPLC (High-Performance Liquid Chromatography)
- Purity. Percentage of target peptide vs impurities and synthesis byproducts
- ≥98% with chromatogram showing single dominant peak
- Confirms synthesis cleanliness and absence of truncated sequences or reagent contamination
- Without HPLC data and chromatogram, purity claims are unverifiable
- Mass Spectrometry (ESI-MS or MALDI-TOF)
- Molecular weight. Verifies correct peptide sequence and detects substitution errors
- 1419.53 g/mol ±1 Da (BPC-157 free peptide) or ~1479 g/mol (acetate salt)
- Distinguishes BPC-157 from similar-length peptides and confirms amino acid sequence accuracy
- Measured mass must match expected value. 'calculated' entries without data are insufficient
- Peptide Content (% w/w)
- Net peptide mass as percentage of total powder weight (accounts for counterions like acetate)
- 70–85% typical for acetate salts
- Critical for accurate dosing. Purity measures compound cleanliness, content measures actual peptide quantity
- A 98% pure peptide with 75% content means 25% of the vial weight is non-peptide mass (acetate salt)
- Sterility Testing (USP <71>)
- Bacterial and fungal contamination via 14-day incubation in growth media
- No growth detected in thioglycollate or soybean-casein digest media
- Prevents introducing live contaminants into cell cultures or animal models
- Absence of sterility data disqualifies the peptide for any in vivo or sterile in vitro use
- Endotoxin Testing (LAL Assay)
- Lipopolysaccharide contamination from gram-negative bacteria (measured in EU/mg)
- <1.0 EU/mg for research-grade peptides; <0.5 EU/mg preferred for in vivo studies
- Endotoxins trigger immune responses that confound experimental results even at sub-infectious levels
- High endotoxin levels invalidate immunological and inflammatory response studies
- Heavy Metals Panel
- Trace contamination from synthesis reagents or equipment (lead, arsenic, cadmium, mercury)
- <10 ppm total heavy metals; individual limits per ICH Q3D guidelines
- Heavy metal contamination introduces cytotoxicity and long-term accumulation risks
- Absence of heavy metals testing is a red flag for peptides intended for extended dosing protocols