🧬

Age & Use Verification

You must be 21+ to enter this site.

All products discussed on this site are Research Use Only (RUO) compounds intended strictly for laboratory research. Nothing here is medical advice, and these products are not for human or veterinary use.

Exit

We use cookies for analytics and to improve your experience. See our disclosure.

★★★★★ Jan 28, 2026

Review of Certified

Review of Certified by Henrich
I am very satisfied with this company so far. I have received every order on time, always within the few days stated in advance, and without any delivery issues. Communication has been clear and reliable. Although I have only been "testing" their peptides for a short time, my experience has been so far positive and it is fulfilling all my expectations. Based on my experience so far, I would recommend this company to anyone looking for a reliable supplier. Customer service is good, and I regularly receive information about discount sales and special offers, which I appreacite as I usually make orders well over 1K. Pricing is reasonable, with additional discounts available for higher quantities, which I appreciate. My only concern is that the product purity and testing are genuine and honest. If this is the case, then the company is clearly doing a good job and is on the right path toward a profitable business with a growing number of satisfied customers. I have chosen Certified peptides as my supplier of peptides, because 1) they have good pricing ( I checked dozens of suppliers to get a good idea what is the price of each available peptide on the market) and 2) purity of their products belongs to the highest on the market, 99% is absolute minimum for me, 98% is not good enough :) and for me it is critical that they test also for endotoxins, heavy metals and sterility. Not all suppliers test it. I would welcome if they also test for microbilogical contamination (TAMC, TYMC, specific pathogens) and residual solvents, but frankly not sure if anyone on the market does it. This would definitely distinguish them from all others!
Was this review helpful? Helpful (0)

More reviews of Certified

Ordered from Certified? Share your experience.

Write a review
🧬

Before you go —

Get weekly supplier alerts, price-drop notifications, and COA updates. Plus our featured pick: Certified Pep.