OptPeptides is a research-chemical supplier that publishes batch-specific third-party HPLC and LC-MS certificates of analysis for its catalog, with a public batch-lookup and responsive support. Community feedback highlights consistent labeling, accurate COAs, and reliable shipping.
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OptPeptides currently holds a status of active with an overall community reputation score of 9.1 / 10, based on 7 reviews and 12 approved lab results. It meets the PeptidesHub bar for a Trusted & Verified seller — active status, published third-party lab testing, and a score at or above the trust threshold.
Janoshik Analytical · batch OPT-2609 · May 19, 2026
Janoshik Analytical · batch OPT-2601 · May 16, 2026
Janoshik Analytical · batch OPT-2612 · May 15, 2026
Eurofins · batch OPT-2606 · May 13, 2026
Colmaric Analyticals · batch OPT-2607 · May 9, 2026
Janoshik Analytical · batch OPT-2608 · May 7, 2026
Janoshik Analytical · batch OPT-2611 · May 4, 2026
Colmaric Analyticals · batch OPT-2604 · May 1, 2026
Janoshik Analytical · batch OPT-2602 · Apr 29, 2026
Colmaric Analyticals · batch OPT-2610 · Apr 27, 2026
Janoshik Analytical · batch OPT-2603 · Apr 25, 2026
Janoshik Analytical · batch OPT-2605 · Apr 11, 2026
I read certificates for work and theirs include the named lab, method, date and batch. Cross-checked one batch on their lookup page and it matched. Pricing is mid for the category.
A few orders in and each batch matched the posted HPLC certificate. Vials were labeled with batch numbers and support answered a question the next day. Solid experience overall.
Useful that they include mass confirmation alongside the area-percent number. Shipping was standard and packaging was fine. No strong complaints.
Used them a few times now and the documentation has been consistent. One order shipped a day later than expected, though they messaged me about it first.
The semaglutide batch had both an LC-MS identity and a purity number posted with a batch ID. Shipping was quick. Would order again.
Moved here after some sketchier vendors. Batch-specific COAs and no pushy upsells. Not the cheapest, but the paperwork is there.
The COA checked out and support was responsive, but the price was higher than a couple of other sources, and I would like to see more of the catalog tested up front.
No enforcement actions on record.