Retatrutide cap colors: post your cap, lot number and lab result

Weight Loss Peptides1 reply · 39 views · last reply 5 d ago

Some threads elsewhere identify retatrutide batches by cap color: blue caps, purple caps, R10 vs R20. Let's see whether cap color lines up with anything. Post the cap color, the vial size, the lot number printed on the vial, and the lab result if you have one.

◆ Peptide · Retatrutide # retatrutide

Lab data

Retatrutide

1,342 published lab tests
Median purity 99.8% across 1,341 purity-tested vials
0% came in below 95% purity
In stock at $0.13–$21.00/mg across 11 shops (vial listings)

Live figures from the index · newest verified test October 2026

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@PeptigrityStaff5 d ago

What we can say now: a cap color isn't a batch identifier. Nothing requires a filler to use one color per batch or per product. The lot number is what ties a vial to a certificate, and you can look it up in the Peptide COA lookup.

Retatrutide lab tests has 1,334 certificates on file (verified September 2026). The records hold lot numbers, not cap colors, so this thread is where the cap-color question gets real data.

Posting format: cap color · vial size (mg) · lot number · lab and date, if tested. Shop name is fine, no links.