Core Peptides

Ordered CJC-1295, KPV, and Tirzepatide for different research protocols. All three came well-packaged and the COAs showed good purity numbers - CJC was 99.1%, KPV at 97.8%, and Tirz at 98.6%. Shipped via priority mail and arrived in 3 days. The only reason I'm not giving 5 stars is the KPV vial had some minor crystallization but it dissolved fine once reconstituted. Their product selection is excellent and covers most of what I need for ongoing studies. Customer portal is easy to use and order tracking actually works unlike some other vendors. Will definitely order again.

Got an email from Core Peptides asking for feedback after my last order. I've been using their TB-500 for various tissue repair studies over the past two months and the results have been consistently reliable. The peptide arrives with proper COA documentation showing 98.4% purity which matches what they advertise. Shipping took about 4 days which is reasonable. Only minor complaint is the vials could use better cushioning in the packaging - one arrived with a slightly loose cap though the product itself was fine. Customer service responded quickly when I asked about reconstitution protocols. Price point is competitive for the quality you're getting.