A Certificate of Analysis helps you understand what was checked and what the results mean. Start by matching the report to your product and batch, then read each test on its own terms.
What screening does Blackwell BioLabs report?
Blackwell BioLabs COA reports include endotoxin screening, microbial sterility screening, and heavy metal screening for arsenic, cadmium, lead and mercury. Start with the certificate library and find the report for your product and batch. The tests listed on that report define its scope. If a method or result is missing, contact us for the supporting information.
Read screening results in context
Read each result alongside its units, acceptance limit and method. An endotoxin PASS, a microbial No Growth result and a Negative heavy metal result describe different checks. Negative does not mean absolute zero. No Growth applies to the sample and test conditions reported. Do not transfer a limit from one batch report to another or infer a testing method from the result alone.
All compounds discussed are available in our catalog of buy research peptides : supplied materials and available lot documents.
Start with traceability
Record the laboratory, report number, analysis date, material identity and sample or lot identifier. Match those identifiers to the supplied container. Ask about missing or conflicting information before relying on the report.
Separate the reported measurements
Identity, chromatographic purity, material quantity and microbiological measurements are different attributes. Read the methods, units and scope of each result. Do not assume a report includes an analysis that is not listed.
Read the limits
A purity percentage does not tell you the result of an endotoxin or microbial sterility screen. Read those results separately, using the limits and conditions stated in the report. Testing applies to the sample examined and does not establish a shelf life, safety or efficacy for human or veterinary use.
Keep the original
Retain the original laboratory document together with the container lot and your receiving record. A catalog display name may differ from a laboratory analyte name; resolve the identity rather than editing the report.
Research Use Only. All content is for informational and educational purposes regarding preclinical research. None of the compounds discussed have been approved by the FDA for human therapeutic use. This information does not constitute medical advice.