Purity, third-party testing, batch numbering, shipping and how to get a price. If something is not covered here, message us on WhatsApp +852 5602 3564.
Cocer Peptides Co., Ltd is a source supplier of research-grade peptides based in Hong Kong S.A.R. The company has worked in peptide research for more than 30 years and supplies customers in over 100 countries, including other peptide brands.
No. Every product on this site is supplied for laboratory research use only (RUO). They are not medicines, not dietary supplements, and not for human or animal consumption. Buyers are responsible for confirming that importing and handling a given compound is lawful where they are.
Products labelled as over 99% purity reliably reach 99% purity, measured by HPLC. For all products Cocer adds 30% extra raw powder to achieve ultra-high content. Occasionally there are differences between Janoshik's analysis and the raw material composition.
Testing is done by Janoshik Analytical, an independent third-party laboratory, not by Cocer Peptides. Cocer has a test report for 100% of its products and publishes the reports as a shared, continuously updated list.
Yes. 45 Janoshik certificates of analysis are published at /janoshik-coa and can be downloaded as images without registering. Product pages link directly to the matching report where one exists.
Reverse-phase high-performance liquid chromatography (RP-HPLC) is the core purity technique, with purity determined by retention-time matching and peak-area normalisation. Electrospray ionisation mass spectrometry (ESI-MS) is used alongside it to confirm molecular weight and composition via mass-to-charge ratio.
All batches sold by Cocer Peptides support customer testing. If the test fails, Cocer refunds the full amount.
If a package is held by customs, Cocer reships it once free of charge.
The format is CS + product abbreviation + date. For example, CS-re30715 refers to Retatrutide 30mg produced on 15 July.
Cocer ships by air worldwide, typically arriving in 3 to 7 days. Shipping days are Monday to Saturday, excluding Sunday. Orders placed and paid after 12 PM PST are shipped the following business day.
The catalog is quote-only: prices are quoted per inquiry rather than published. Add the products and quantities you need to the inquiry list, then send it through the contact form or message WhatsApp +852 5602 3564 for a price.
49 research peptides across five categories: popular peptides (including the GLP-1 and dual-agonist analogues Semaglutide, Tirzepatide, Retatrutide, Mazdutide and Cagrilintide, plus BPC-157, TB-500, MOTS-c, SS-31, PT-141, NAD+ and Thymosin Alpha-1), pre-mixed blends, Khavinson bioregulators, melanotan peptides and cosmetic peptides such as GHK-Cu and Snap-8.
Products are supplied as lyophilised powder in kits of 10 vials (listed as “1kits (10Vials)”), with the milligram strength per vial shown on each product page.
WhatsApp or call +852 5602 3564. The contact form at /contact-us sends your message together with your inquiry list, and the WhatsApp QR code on that page opens a chat directly.
All products on this website are supplied for research use only. Not for human or animal consumption.
