What is a lot number?
A lot number is the unique identifier assigned to a batch of material that was produced, handled and tested as one unit; it links a vial to its certificate of analysis.
Why lot numbers matter
Analytical results describe a specific batch, not a product in general. The lot number is what connects the vial in your hands to the test results for the batch it came from. Without it, a certificate of analysis cannot be matched to anything.
Melanotan II lot numbers
Every Melanotan II vial label carries a lot number such as KB32432. The same number appears on the laboratory certificate and names the lot's page in the COA archive, for example /coa/kb32432/.
Lot numbers and laboratory reference numbers
The testing laboratory also assigns its own reference numbers to each submitted sample: accession number and search code. They are listed on each Melanotan II lot page with the lot number, so a certificate can be cross-checked with the laboratory.
Looking up a lot
Enter the lot number from your vial at mt2.bio/verify to see that lot's results.