Verified Peptide Coupon and Discount Codes
Project Biohacking negotiates and verifies a code with every company in this directory, then re-checks each one against the live vendor site every month. Codes that stop working are pulled, not left to rot. Below are the eight companies we hold a current verified code with, followed by the peptide companies we are regularly asked about but do not have a code for.
A research peptide vendor directory is a curated reference for researchers who want to compare suppliers on quality and transparency not just price. This one is updated regularly and built around a single standard: vendors that operate like professional laboratory suppliers, not discount storefronts.
Here's what this page gives you:
- Verified discount codes for eight research peptide suppliers, rechecked monthly
- The code, the discount, and what it applies to, for each supplier
- Links to each supplier's own page with its code terms, shipping and returns
- Full affiliate transparency so you know how this page is supported
PeptideSciences customer? You're in the right place. PeptideSciences shut down on March 6, 2026 and is not accepting orders or refunds. The 8 vendors below are all verified, third-party tested, and currently shipping with active discount codes. Read the full analysis of the PeptideSciences closure.
Affiliate Disclosure: Project Biohacking may earn a commission on purchases made through links on this page, at no extra cost to you.
How Project Biohacking Scores Each Peptide Vendor
Each supplier carries a score out of 100: half the weight sits on analytical documentation, 20 points each on ownership and on commercial and operational factors, and 10 on community track record.
Browse and compare the listings below, then open a supplier's page for its code, its terms and the evidence behind its score. Each vendor page states when the code was last checked and what it applies to.
All products listed are research chemicals intended for laboratory and in vitro use only. Nothing on this page is medical, legal, or financial advice. Consult a qualified professional before making health-related decisions.
Note: Project Biohacking provides affiliate links for informational purposes only. These partner offers are not medical advice. The compounds listed are sold by their vendors for research purposes only. Peptides intended for human use are available by prescription through a licensed clinician.
Peptide Vendor Discount Codes, Checked at Checkout Monthly
Browse our curated list of research peptide suppliers. Each vendor has been evaluated for documentation transparency, third-party testing practices, and catalog depth
Peptidology
PROBIO15 saves 15% sitewide at Peptidology and does not lapse between sales; if Peptidology runs its own sitewide promotion, use whichever is larger. Checked October 2026.
Three ISO 17025 laboratories, a seven-procedure release battery, and a QR-linked certificate on every vial.
Biolongevity Labs
Save 15% with PROBIO15 at either Biolongevity store, even on sale items. Checked October 2026.
Three publicly named co-founders, with lot-specific certificates from MDx BioAnalytical searchable on the laboratory's own site.
Ascension Peptides
Save 20% with PROBIO20, the biggest code we hold; Ascension's checkout took it on a sale item on October 1. Checked October 2026.
A searchable library of 85 certificates, with the testing laboratory named on each batch.
BioEdge Research Labs
Save 15% with PROBIO15 once your BioEdge account is set up. Free shipping over $150 is counted after the discount, so a cart near the line can drop below it. Checked October 2026.
Two independent laboratories, certificates verifiable by code at each laboratory's own portal, and Kovera reports covering endotoxin, sterility and heavy metals.
Limitless Biotech
Save 15% with PROBIO15 at Limitless, on top of its sitewide sales. New buyers apply for research access before prices show. Checked October 2026.
Every batch gets sterility and endotoxin testing, and the laboratories' verification keys let you check the reports yourself.
Ameano Peptides
Save 10% with PROBIO at Ameano, also sold as AMP. Free shipping over $200 is counted after the discount. Checked October 2026.
Three vials from the same batch are tested per report, which catches fill variance that single-vial testing misses. Testing runs through a single non-accredited laboratory.
Apollo Peptide Sciences
Save 15% with PROBIO15 at Apollo, including bulk boxes, or 20% in total when you pay by ACH. Checked October 2026.
Samples are submitted to Janoshik blind, with a QR verification key on every certificate. Published testing covers purity only.
CanLab Intl
Save 15% with PROBIO15 on most CanLab products and on the VIP membership purchase, which carries 25% off year-round. Checked October 2026.
A publicly named scientific director with documented credentials, and the full Khavinson bioregulator series. Certificates are supplied on request rather than published.
Note: Project Biohacking provides affiliate links for informational purposes only. These partner offers are not medical advice. The compounds listed are sold by their vendors for research purposes only. Peptides intended for human use are available by prescription through a licensed clinician.
Peptide Companies We Do Not Have a Code For
These are companies readers ask us about that are not part of the Project Biohacking directory. We hold no affiliate relationship and no verified code with any of them, and we have not reviewed their testing documentation. We list them here so the answer is on the record rather than absent. If a company below establishes a verified code with us, it moves into the directory above.
| Company | Project Biohacking code | Reviewed by us |
|---|---|---|
| Ascend Science / Ascend Nutrition | None | No |
| Biotech Compounds | None | No |
| Biotech Peptides | None | No |
| Chameleon Peptides | None | No |
| Compound Purity | None | No |
| Eternal Peptides | None | No |
| Honest Peptide | None | No |
| Loti Labs | None | No |
| Mile High Compounds | None | No |
| NexaPH | None | No |
| Northline Labs | None | No |
| Pacific Edge Labs | None | No |
| Peptagon | None | No |
| Peptide Crafters | None | No |
| Peptide Foundry | None | No |
| Peptide Partners | None | No |
| Peptide Source | None | No |
| Peptidex | None | No |
| Precision Peptides | None | No |
| Protide Health | None | No |
| Pure Health Peptides | None | No |
| Purity Peptide Labs | None | No |
| RC Peptides | None | No |
| Research 1 Peptides | None | No |
| Research Purpose Labs | None | No |
| Solution Peptides | None | No |
| vPeptide | None | No |
| Wholesale Peptides | None | No |
Every code we do hold is listed above, each one re-checked monthly against the live vendor site.
How every point is awarded, with the evidence behind each supplier's score, is on our
rating methodology page.
Peptide Research Tools and Guides
- Peptide Reconstitution Guide – Step-by-step instructions + best practices
- How we rate peptide vendors- the full scoring method and every vendor's score
- Peptide Calculator – Instant reconstitution & dosing math
- Third-Party Testing: What Actually Matters – How to read COAs like a pro
- What Are Peptides? – Beginner-friendly foundation guide
- Peptide Coaching – Personalized research education
Sourcing is shifting as policy changes. See
RFK Jr.'s FDA peptide pushfor the regulatory backdrop.
Peptide Coupon Code FAQ
Is Peptide Sciences still in business?
No. Peptide Sciences voluntarily shut down on March 6, 2026. The website is dark and the company is not accepting orders, fulfilling pending shipments, or responding to customer inquiries. The closure followed a period of intensifying FDA enforcement and pharmaceutical litigation against research peptide vendors. There is no indication the company plans to reopen.
Does Peptide Sciences have a coupon code in 2026?
No. Peptide Sciences shut down on March 6, 2026 and no longer accepts orders or honors discount codes. Any site currently offering a "Peptide Sciences coupon code" is either outdated or fraudulent. For verified, currently active discount codes, the eight vendors in our directory above offer 10–20% off with codes PROBIO, PROBIO15 and PROBIO20.
Are these peptide coupon codes still active?
Yes. Every code on this page went through a live checkout at its vendor on October 1, 2026, and all eight are rechecked monthly. A code that stops working comes off the page.
What are PROBIO, PROBIO15 and PROBIO20?
They are the three Project Biohacking codes used across the companies in this directory. PROBIO15 takes 15 percent off, PROBIO20 takes 20 percent off, and PROBIO is the base code used where a company runs a different rate. Each company page states which code applies to it, what discount it carries, and what it applies to.
What should I do if a peptide coupon code does not work?
Check the company's page here first, because codes change without notice and that page carries the current one along with the date it was last checked. Some codes exclude sale items, bundles or bulk orders. If the code on our page has stopped working, tell us and we will verify it and update or remove it.
Can I combine a peptide coupon code with another discount?
Often, but it depends on the company. Codes at Ascension, Biolongevity and Limitless apply on top of their automatic sales, and Apollo's code stacks with its 5 percent ACH discount. Entering two coupon codes in one order rarely works, so check each company's page for its terms.
Research compounds discussed here are for laboratory research only, not for human or veterinary use, and nothing on this page is medical advice.