Synthesis Peptides Discount Code: PROFPEPTIDE — Save 10%
Use coupon code PROFPEPTIDE at Synthesis Peptides to save 10% on your order. Prof. Peptide verifies this code directly with the vendor and updates it when it changes.
Key facts
- Price comparison
- 7 of 31 comparable products cost less than the median for the same product and size across every vendor Prof. Peptide tracks — before the code
- Catalog
- 46 products at the 2026-10-16 pull · 31 in Prof. Peptide’s price comparison, 30 of those in stock (a further 1 priced here with too few other vendors to compare against) · Vials, plus a tablet line
- Third-party testing
- Freedom Diagnostics
- Certificates of analysis
- Certificate published for every batch, surfaced on the vendor’s own site with the peptide content stated on each
- Prof. Peptide’s discount
- 10% off with code PROFPEPTIDE
- Code checked
- Prof. Peptide confirmed this rate on October 13, 2026.
Compare Synthesis Peptides’ prices: 5-Amino-1MQ, Semax, Melanotan II, Tirzepatide, Selank, GHK-Cu, BPC-157, Cagrilintide
The Synthesis Peptides coupon code, discount code and promo code are all the same string — PROFPEPTIDE — whether you searched for a synthesispeptides coupon or a Synthesis Peptides promo code. Prof. Peptide maintains it directly with the vendor.
Synthesis Peptides is a US-based research-peptide supplier headquartered in Las Vegas, Nevada, with a catalog spanning metabolic, recovery, performance, growth-hormone, cognitive, skin-health, gut-health, sleep, longevity, and sexual-health research. Popular compounds by category:
- Metabolic & GLP-1
- Semaglutide, Tirzepatide, Retatrutide, Cagrilintide, MOTS-C, AOD-9604, 5-Amino-1MQ
- Performance & Energy
- IGF-1 LR3
- Growth Hormone
- CJC-1295, Ipamorelin, Sermorelin, Tesamorelin
- Skin Health & Anti-Aging
- GHK-Cu, GLOW 70, KLOW 80, Melanotan II
- Gut Health & Immunity
- Thymosin Alpha-1, KPV
- Sleep & Recovery
- DSIP
- Sexual Health
- PT-141
Synthesis Peptides runs per-batch third-party HPLC testing on its research compounds, verifying a minimum of ≥98% purity before release. The certificates are issued by Freedom Diagnostics, and a certificate resolves on the laboratory’s own site rather than only on Synthesis’s — so the check runs against the lab rather than against the vendor. Synthesis Peptides accepts Visa, Mastercard, American Express, Discover and PayPal per its FAQ.
Prof. Peptide Verification
Verified · 11 October 2026
We identified the lab, matched the certificates on its own website, and read every test result.
Lab identified
PassedFreedom Diagnostics
Certificates verified
Passed3 of 3 matched on Freedom Diagnostics’ own website.
The three certificates were tested on 15 August and 23 August 2026.
Cartalax 20mg · lot LAX20926
PassedFreedom Diagnostics · tested 23 August 2026 · certificate SYNT2608180501
- Identity (LC-MS) — Cartalax
- Purity (HPLC-UV) — 99.75%
- Net Content — 21.05 mg
- Appearance — White Lyophilized Powder
- Passed: Elemental Impurities (ICP-MS) — Pass — Arsenic, Cadmium, Lead, and Mercury below reporting/specification limits
- Passed: Endotoxin Replicate 1 — Pass (spec Assay Sensitivity: ≤0.05 EU/mL)
- Passed: Endotoxin Replicate 2 — Pass (spec Assay Sensitivity: ≤0.05 EU/mL)
- Microbial Analysis (PCR) — No Detectable Microbial DNA
- Fentanyl — No Fentanyl Detected
RETATRUTIDE 10mg · lot ORB-3R1096
PassedFreedom Diagnostics · tested 23 August 2026 · certificate SYNT2608180468
- Identity (LC-MS) — GLP RT
- Purity (HPLC-UV) — 99.83%
- Net Content — 12.51 mg
- Appearance — White Lyophilized Powder
- Passed: Elemental Impurities (ICP-MS) — Pass — Arsenic, Cadmium, Lead, and Mercury below reporting/specification limits
- Passed: Endotoxin Replicate 1 — Pass (spec Assay Sensitivity: ≤0.05 EU/mL)
- Passed: Endotoxin Replicate 2 — Pass (spec Assay Sensitivity: ≤0.05 EU/mL)
- Microbial Analysis (PCR) — No Detectable Microbial DNA
- Fentanyl — No Fentanyl Detected
Selank 30mg · lot SEL30926
PassedFreedom Diagnostics · tested 15 August 2026 · certificate SYNT2608110654
- Identity (LC-MS) — Selank
- Purity (HPLC-UV) — 99.68%
- Net Content — 32.20 mg
- Appearance — White Lyophilized Powder
- Passed: Elemental Impurities (ICP-MS) — Pass — Arsenic, Cadmium, Lead, and Mercury below reporting/specification limits
- Passed: Endotoxin Replicate 1 — Pass (spec Assay Sensitivity: ≤0.05 EU/mL)
- Passed: Endotoxin Replicate 2 — Pass (spec Assay Sensitivity: ≤0.05 EU/mL)
- Microbial Analysis (PCR) — No Detectable Microbial DNA
- Fentanyl — No Fentanyl Detected
Synthesis Peptides catalog & prices
Struck-through prices are Synthesis Peptides’ list price; the bold figure is your price once you apply code PROFPEPTIDE at checkout. Prices current as of October 16, 2026.
Prof. Peptide checked Trustpilot and Finnrick on 30 September 2026.
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Affiliate disclosure: Prof. Peptide is independently operated and may earn affiliate commissions when you use our discount codes or buy through our links, at no additional cost to you. Affiliate relationships never determine vendor inclusion, ranking, verification, or our editorial conclusions.