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
- Verified discount codes for eight research peptide suppliers, rechecked monthly
- 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.
Transparency: Some links on this page are affiliate links. If you use them, Project Biohacking may earn a commission at no extra cost to you. We only list vendors we believe meet reasonable quality and transparency standards.
How this directory is scored
Every supplier here is scored out of 100 across four criteria: analytical documentation at 50 percent, ownership and accountability at 20, commercial and operational factors at 20, and community track record at 10.
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.
Research Peptide Vendor Directory — Affiliate Vendors & Discount Codes
Browse our curated list of research peptide suppliers. Each vendor has been evaluated for documentation transparency, third-party testing practices, and catalog depth
Peptidology
Save 15% with PROBIO15. Sitewide standing code, so it does not expire between sales. When Peptidology runs its own sitewide promotion, compare the two at the cart and take whichever is larger. Verified August 2026.
Three ISO 17025 laboratories, a seven-procedure release battery, and a QR-linked certificate on every vial.
Biolongevity Labs
Save 15% with PROBIO15. Sitewide, and it works on both Biolongevity storefronts. It stacks with Biolongevity sales and promotions, though not with a second coupon code. Verified August 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 largest discount in this directory. It applies to most regular-priced compounds and blends, but some items and categories are excluded and it will not apply on top of an automatic reduction. The excluded list changes, so confirm the discount shows in your order summary before you pay. Verified August 2026.
An 84-record certificate library with four reports per batch, each carrying lot number, analysis date and analyst signature.
BioEdge Research Labs
Save 15% with PROBIO15. One discount code per order, and BioEdge allows it to be combined with loyalty points. The discount comes off before the free-shipping threshold is assessed, so a cart near the line can fall below it. Verified August 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. Sitewide, and it stacks with Limitless sales and promotions. Only one code fits the field per transaction, so it cannot be combined with a second coupon. Verified August 2026.
Sterility to USP 71 and endotoxin to USP 85 on every batch, with verification keys checkable at the issuing laboratories.
Ameano Peptides
Save 10% with PROBIO. It stacks with Ameano's own sale codes, and both discounts are calculated on the pre-discount subtotal rather than compounded, so a 30% sale plus PROBIO comes to 40% off. Free shipping is assessed on the total after discounts. Verified August 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. It applies to the fixed-price bulk bundles as well as single vials, and on a mixed cart it discounts the combined subtotal. It also stacks with Apollo's 5% ACH payment discount, which brings the total to 20% off the subtotal. Verified August 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. It applies to most products rather than all, and the excluded list can change, so check it took on your specific items. It also applies to the CanLab VIP membership purchase itself, and that membership carries 25% off all products year-round. Verified August 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, always consult your healthcare provider before using any peptide or supplement.
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.
Every supplier here is scored out of 100 points across four criteria: analytical documentation, ownership and accountability, commercial and operational factors, and community track record. The full method, every point value, and the evidence behind each score are published on our
rating methodology page.
Related Resources & Tools
- 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 push for the regulatory backdrop.
Note: Project Biohacking provides affiliate links for informational purposes only. These partner offers are not medical advice, always consult your healthcare provider before using any peptide or supplement.
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 was checked against the live vendor site in August 2026, and we re-check all eight monthly. A code that stops working is pulled from the page rather than left in place, so nothing here is a code we have not confirmed ourselves.
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?
Usually not, and the policy differs by company. Ascension Peptides does not allow codes to be combined with other offers. Several companies in this directory publish no stacking policy at all, so treat a single code as the expected case and check the company's own terms before assuming otherwise.
Affiliate Disclosure: Some links on this page are affiliate links. If you make a purchase through them, Project Biohacking may earn a commission at no extra cost to you. This helps support our free research tools, educational content, and vendor reviews. We only recommend vendors we believe meet reasonable quality and transparency standards. This page is for educational purposes only, not medical advice. Please consult a qualified healthcare provider before starting any peptide or supplement protocol.