Third-Party Testing & Certificates of Analysis
Every peptide sold by PreWorkout Formula undergoes independent third-party testing before it ships. Not optional. Not available “upon request.” Not performed in-house by the manufacturer. A separate analytical laboratory tests every production batch using two complementary methods before we add it to inventory.
How We Test
HPLC Purity Analysis
High-Performance Liquid Chromatography separates the peptide sample into individual components and produces a chromatogram showing the target peptide peak versus any impurities. Our floor is 99.0% purity. A batch at 98.5% gets rejected regardless of cost. That half-percent difference introduces variables that contaminate research data and waste months of work.
Mass Spectrometry Verification (ESI-MS)
Electrospray Ionization Mass Spectrometry confirms the molecular weight of the synthesized peptide matches the theoretical value for the target compound. This catches mislabeled products, truncated sequences, and synthesis errors that HPLC alone cannot detect. The observed mass must fall within ±1 Da of the expected molecular weight.
What Ships With Your Order
Every order from PreWorkout Formula includes a Certificate of Analysis containing:
- Product identification — Peptide name, amino acid sequence, batch/lot number
- HPLC chromatogram — Visual purity profile with exact percentage
- Mass spectrometry data — Observed vs. theoretical molecular weight
- Physical description — Appearance of the lyophilized powder
- Lab identification — Independent laboratory name and date of analysis
Why Independent Testing Matters
In-house testing is a conflict of interest. The company making the product is also evaluating whether it passes. Independent third-party testing removes that entirely. The lab has no financial stake in our sales. No incentive to pass a bad batch. No relationship that could compromise objectivity.
When evaluating any peptide supplier, two questions matter: Who performed the testing? Will they show you the full COA before you buy? If either answer is vague, that tells you what you need to know.
Request a COA
Need a Certificate of Analysis for a specific batch before ordering? Want to verify the authenticity of a COA you’ve received? Contact our team and we’ll send it over.