Why retatrutide specifically deserves extra care
As a newer peptide compared with more established GLP-1 drugs, retatrutide has a smaller base of community experience and independent testing data to draw on. That makes the specific seller’s own documentation even more important, since there’s less external verification to lean on.
What a retatrutide-specific COA should show
The COA should confirm the compound is actually retatrutide (not a different or similarly named peptide), its measured purity, and the batch number matching the vial received.
Checking the mg content carefully
Retatrutide vials are sold in a range of sizes; confirming the exact mg content against the COA, rather than assuming from the listing title alone, avoids a mismatch that would throw off every subsequent dosing calculation.
Questions worth asking before ordering
Whether the batch has a COA available specifically confirming it as retatrutide, what testing method was used, and how the order will be shipped given the cold-chain sensitivity of the product.
Starting cautiously
For a first retatrutide order specifically, starting with a smaller quantity from a seller who’s cleared the documentation and shipping checks is a reasonable way to verify quality directly before committing to a larger order.