How we test every batch: the analytical methods behind identity, purity and stability.
The compounding of peptide formulations is a precise science. However, without rigorous analytical testing, precision is merely an assumption. At Peptide Direct, we believe that a laboratory grading its own homework is not verification. That is why every single batch undergoes independent, third-party analysis before it is released.
Why is Third-Party Testing Necessary?
In the landscape of research compounds, the primary concern is the presence of impurities, truncated sequences, and endotoxins resulting from the synthesis process. Independent testing ensures that the formulation in the vial precisely matches the label claim, free from bias. We mandate a minimum purity of 99.0% (with batches ranging from 99.0% to 99.5%) for all active compounds.
What Analytical Methods Are Used?
Our independent partner, Quantum Analytics Laboratories, employs a suite of pharmaceutical-grade methodologies to verify each batch. Here is the breakdown of the exact tests performed:
| TEST METHOD | PURPOSE | OUR STANDARD |
|---|---|---|
| HPLC-UV | High-Performance Liquid Chromatography. Separates the formulation to confirm the exact compound sequence and measure total purity. | ≥ 99.0% Purity |
| Mass Spectrometry (MS) | Determines the exact molecular weight of the compound to ensure no truncated amino acid sequences are present. | Exact match |
| LAL Assay | Bacterial endotoxin testing to ensure the compound was synthesised in a sterile environment. | < 0.25 EU/mL |
| USP <71> | Inoculation of the compound into culture media to ensure absolute sterility over a 14-day incubation period. | No growth detected |
How Can I Verify The Results?
Transparency is only valuable if it is accessible. We publish the full Certificate of Analysis (COA) for every batch we dispatch. You can verify the batch number printed on your pre-filled pen against our public database.
Review the latest Certificates of Analysis on our Lab Results page →
The Canadian Standard
All compounding and secondary verification is performed in Canada. By maintaining a strict domestic supply chain, we eliminate the degradation risks associated with international customs delays. Our formulations are kept in temperature-controlled environments from the laboratory to your door.
For further reading on pharmaceutical compounding standards, refer to the United States Pharmacopeia (USP) guidelines, which inform many North American best practices.
Explore Verified Formulations
Every formulation in our catalogue has passed the rigorous testing protocols detailed above. From metabolic optimization to tissue-repair compounds, explore our science-backed inventory.
View the Catalogue
