Buying Guide
Biotech Peptides Review 2026: Named-Lab COAs and Lower NAD+ Prices at Curo
Published: October 2, 2026
By the Curo Research Team
Curo sells research peptides, so Biotech Peptides competes with us. Is Biotech Peptides legit? On October 2, 2026, it was a live store with a COA on each product page we checked. Its Semax report names no lab. Every Curo lot report names its lab and links to the lab's copy, and Curo's NAD+ 500mg costs $119 against Biotech's $179.
TL;DR
- Curo is our pick for researchers who want every report tied to a named lab, an endotoxin result where tested, and a lower price on NAD+ 500mg. Browse the Curo research catalog.
- Biotech Peptides' Semax report, for lot 3140081, names no laboratory, so it cannot be checked with a lab. Its NAD+ 500mg report reads 98.86% and carries no endotoxin result.
- Curo's NAD+ 500mg lot reads 99.9% with an endotoxin pass, at $119. Biotech charges $179.
- Open the report for your lot before you pay. Curo's are in our public COA library.
Biotech Peptides is one of the vendors in our guide to the best peptide companies of 2026. This page goes one level deeper, report by report.
Biotech Peptides vs Curo at a glance
| Biotech Peptides | Curo | |
|---|---|---|
| Status | Live, taking orders | Live, taking orders |
| Lab named on each report we opened | NAD+: MZ Biolabs. Semax: no lab named | BT Labs on both (ILS Labs on one current lot) |
| Link to the lab's own copy | NAD+: QR code. Semax: none | A Verify link beside each published report |
| Endotoxin result on the NAD+ report | None | Pass |
| NAD+ 500mg, one vial | $179, lot at 98.86% | $119, lot at 99.9% |
| 80mg blend | $220 for the vial | $124 for the kit, with solution and case |
| Payment types shown before checkout | "Credit cards accepted" in its link-preview title | Card, crypto (5% off), Zelle, Cash App |
| Checked | October 2, 2026 | October 2, 2026 |
Why researchers choose Curo over Biotech Peptides
Every Curo report names its lab. The Biotech Semax report we opened sits on a Biotech Peptides template with no laboratory named and no code to check it with one. Each published report in Curo's COA library names BT Labs or ILS Labs and links to the lab's own copy.
The NAD+ record is fuller and the vial costs less. Curo's NAD+ 500mg lot NAD500SR526 reads 99.9% purity, with an identity result and an endotoxin pass, for $119. Biotech's NAD+ 500mg lot reads 98.86% for $179. Its lab report covers purity and identity, and the lab's own site says its purity testing does not cover endotoxins.
Our blend kit costs less. The KLOW kit from Curo is $124 for an 80mg vial, a 3 mL solution and a storage case. Biotech lists its 80mg version at $220.
Payment options are public. Curo lists card, crypto with a 5% discount, Zelle and Cash App on its payment methods page. Biotech names credit cards in the title it gives for link previews, and we found no other payment list before checkout.
Every Curo order also includes Shipping Protection, which replaces a parcel lost in transit or damaged by the carrier at no charge.
Who Biotech Peptides may suit
Biotech Peptides offers custom synthesis. A researcher who needs a sequence that no catalog stocks can ask it for a quote.
Compare lots for a specific compound
NAD+ 500mg is a like-for-like match. Biotech lot 3140062 was analyzed by MZ Biolabs on July 15, 2026: 98.86%, with no endotoxin result. Curo lot NAD500SR526 was tested by BT Labs in May 2026: 99.9%, identity confirmed, endotoxin pass. Our article on what NAD+ trials measure and administer covers the research side.
Semax. Biotech's lot 3140081 reads 99.1% on a report that names no lab, dated March 7, 2026. Curo's Semax 10mg, lot SEM10SR526, reads 99.6% on a BT Labs report, with an endotoxin pass and a Verify link. For background on the compound, see how Semax and Selank differ.
Whatever you buy, check the lot number on the vial against the report. Our walkthrough for verifying a COA shows how.
What we could not check
- Which lab tested Biotech's Semax lot. The report does not say, and we did not ask Biotech Peptides.
- Payment options at its checkout. We did not start a checkout.
- Where Biotech Peptides makes its products. The site says it synthesizes in the United States, and public pages cannot confirm that.
Alternatives to Biotech Peptides
Curo (ours, and our recommendation)
- Best for: researchers who want a named lab and a Verify link on every published report, plus endotoxin results where tested.
- Price: NAD+ 500mg, $119. KLOW kit, $124.
- Lab reports: BT Labs and ILS Labs, by lot, each with a Verify link to the lab's own copy.
Curo sends each production lot to an independent US lab and publishes the result, as our page on how Curo tests every lot explains. Orders ship from the United States with Shipping Protection included. Our account of Curo's own testing records lays out the full record.
American Peptides
- Best for: researchers who need shipping outside the United States.
- Price: NAD+ 1000mg, $210 (Curo: $149).
- Lab reports: Bioviridian Inc., with a verification code on each report.
See our American Peptides review.
Core Peptides
- Best for: researchers who already order from it, at corepeptides.com.
- Price: NAD+ 750mg, $292.
- Lab reports: Vanguard Laboratory, HPLC purity only on the NAD+ report we read.
Several sites use the Core Peptides name. Our Core Peptides review explains which one is the original store.
How we checked
On October 2, 2026 we read Biotech Peptides' home page, shop listing, NAD+ and Semax product pages, shipping page, refund page and about page. We opened both COA files, scanned the QR code on the NAD+ report and loaded the same report on MZ Biolabs' site. We checked Curo's figures on our COA library, product pages and shipping, returns and payment pages.
We did not buy from Biotech Peptides, test its products or reach its checkout. Prices are one-vial list prices. Curo sells under its Research Use Only policy. Our framework for comparing research peptide companies explains the method.
Frequently asked questions
Is Biotech Peptides legit?
Biotech Peptides is a live store whose domain was registered in January 2020. On October 2, 2026, the product pages we checked each had a COA for the current lot. Its NAD+ report opens on the testing lab's site. Its Semax report names no lab, so that one cannot be checked with a lab.
Does Biotech Peptides publish COAs?
Yes, on its product pages. The NAD+ 500mg report comes from MZ Biolabs and has no endotoxin result. The Semax 25mg report does not name the lab that ran it.
Why do researchers choose Curo over Biotech Peptides?
Every Curo report names its lab and links to the lab's own copy. Curo's NAD+ 500mg lot reads 99.9% with an endotoxin pass and costs $119, against $179 at Biotech Peptides. Curo also lists its payment methods in public and includes Shipping Protection on every order.
How do I check a Curo lot report?
Find the lot number on the vial label and enter it in Curo's COA library. The report shows purity by HPLC, identity, fill, and endotoxin where tested. Its Verify link opens the lab's own copy.
What is a good alternative to Biotech Peptides?
Curo. Each published lot report names its lab and links to the lab's copy, NAD+ 500mg costs $119, and every order includes Shipping Protection.