Nucleus Research Compounds
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FAQ

Frequently asked questions

Short answers about ordering, certificates, shipping, and the terms of sale. Anything else — the live chat is open on every page.

A certificate of analysis (COA) is a lab report from an independent laboratory verifying a batch's purity and mass. When a batch we stock has been tested, we publish the certificate directly on the product page — press the View COA button to read it before you buy. Products without a published certificate simply don't show the button.

Verified orders

What researchers say

4.8 / 5 average
“Third order from Nucleus and every vial arrived cold-packed with the COA matching the lot number on the label. Weighing on my milligram scale, amounts have been spot on.”
Marcus T.Retatrutide · September 2026
“What sold me was being able to open the Janoshik report right on the product page before buying. Shipping was two days and the vials were sealed properly.”
Dana R.BPC-157 · September 2026
“Clean site, honest lab data, no hype claims. Would like more bundle options, but the peptides themselves test exactly as listed.”
Kwame O.TB-500 · August 2026
“Recommended. Fast shipping, and delivery times were fully in line with the estimated window. Packaging was solid — even with a less-than-careful courier, everything arrived intact with no damage. On top of that, the COA certificates and test results were included. Fully recommended.”
Verified buyerPeptide order · October 2026
“TOP!! Everything 5+ The delivery arrived as agreed, was well packaged, and everything was in perfect condition. Shipping was very fast, and communication was always prompt and reliable.”
Verified buyerPeptide order · October 2026
“First order, will order again. Just had my first order and can't complain. Delivery was fast. They have certificates for selected products. So far so good.”
Verified buyerPeptide order · October 2026