Home › Guides › Does a Peptide COA Expire? What the Date Really Means By TorontoHealth Editorial · Updated June 17, 2026
Does a Peptide COA Expire? What the Date Really Means
Short answer: A COA is a snapshot of one batch tested on one date. It doesn't "expire" like milk — but an old COA tied to a batch you're not actually buying tells you little about the vial in your cart. Batch-matching matters more than the calendar.
What the date actually means
The date tells you when that specific batch was tested. It's useful context, but a recent date on the wrong batch is no more relevant than an old date on the right one.
Batch-matching beats freshness
The question that matters: does this COA correspond to the batch you're receiving? A perfectly fresh report for a different lot doesn't describe your product.
What to ask for
A COA whose batch or lot number matches what you're buying.
Verification on the lab's own portal, with the vendor named.