Yes, every batch we offer comes with a corresponding Certificate of Analysis (COA). Each vial is labeled with a unique batch code and a QR code that links directly to its specific COA.
All products undergo comprehensive testing to ensure they meet safety standards and are suitable for research purposes. While purity often receives the most attention, sterility and endotoxin levels are just as critical.
These additional tests are essential to support accurate, reliable research outcomes.
Overview of the Testing Process
Purity Testing
Purity testing determines how much of the active compound is present in relation to any related substances. High-Performance Liquid Chromatography (HPLC) is used to measure the peak area percentage, indicating the proportion of the main ingredient.
A result of 99 percent purity means 99 percent of the content is the intended compound, with only 1 percent consisting of trace substances. Purity levels above 95 percent are typically classified as pharmaceutical grade.
Assay Testing
Assay testing measures the exact quantity of the active substance in a product. It compares the sample to a certified reference standard to confirm the correct amount is present in each vial. This ensures dosage consistency in research settings.
Sterility Testing (USP 71)
Following United States Pharmacopeia (USP) guidelines, sterility testing verifies that a product is free from any living microorganisms. Techniques such as membrane filtration or direct inoculation are used to confirm the absence of bacteria, fungi, and other contaminants in products labeled as sterile.
Endotoxin Testing (USP 85)
Even when bacteria are destroyed, their remnants—known as endotoxins—can remain. These toxic substances can provoke strong immune responses. USP 85 testing identifies and quantifies endotoxin levels to ensure they remain within safe limits.
Why Purity Alone Is Not Enough
High purity does not guarantee a product is safe. For example:
A compound may contain harmful microorganisms that are not detected by purity testing
Endotoxins may still be present, even if the product is sterile
This is why sterility and endotoxin testing are necessary parts of a complete safety profile.
Importance of Sterility and Endotoxin Testing
Sterility Testing (USP 71)
When sterility is not tested or if a product fails this test:
Harmful microorganisms may be present
Users could experience infections ranging from mild to severe
In extreme cases, infections may lead to organ failure, particularly in individuals with weakened immune systems
Endotoxin Testing (USP 85)
If endotoxin testing is skipped or fails:
Test subjects may experience fever, inflammation, or septic shock
Endotoxin levels as low as 0.5 EU/mL can trigger dangerous immune responses
Vulnerable groups such as children, older adults, or those with compromised immunity are at higher risk
Even sterile products can cause harm if endotoxins are not removed
A Complete Approach to Research Safety
Ensuring a product is safe for research requires more than just checking purity. Each step in the testing process plays a specific role:
Purity testing confirms the correct substance is present
Assay testing verifies the exact amount of the active compound
Sterility testing ensures no living microorganisms are present
Endotoxin testing confirms the absence of toxic bacterial residues
Only when all these tests are passed can a product be considered safe for research use. This multi-layered approach provides protection against both visible and hidden risks, supporting reliable and trustworthy scientific outcomes.