Northline Labs Coupon Code: PROFPEPTIDE — Save 10%
The current Northline Labs (northlinelabs.org) discount code is PROFPEPTIDE, for 10% off your order. Prof. Peptide verifies this code directly with the vendor and updates it when it changes.
15% off sitewide, already in the shop prices, plus PROFPEPTIDE for a further 10% off the sale price, 23.5% off the regular price. (Tested at checkout.)
Key facts
- Catalog
- Lyophilized research peptides and blends, with a bulk order program
- Third-party testing
- Horizon Analytical
- Certificates of analysis
- A certificate archive of 50 lots, each tested by Horizon Analytical
- Prof. Peptide’s discount
- 10% off with code PROFPEPTIDE
- Code checked
- Prof. Peptide confirmed this rate in its partner dashboard.
Overview
Northline Labs sells lyophilized research peptides and blends, with a bulk order program for larger research orders, for laboratory research use only.
Northline Labs catalog
The peptides are grouped below by Prof. Peptide's research-library categories.
- Metabolic & GLP-1
- GLP-1 SM, GLP-2 TR and GLP-3 RT (Northline Labs' own product names), Cagrilintide, AOD-9604, 5-Amino-1MQ, MOTS-C, SLU-PP-332, L-Carnitine, LIPO-C
- Recovery & Tissue Repair
- BPC-157, TB-500, BPC-157/TB-500, KPV, IGF-1 LR3, Follistatin, VIP
- Growth Hormone
- Ipamorelin, CJC-1295 with DAC, CJC-Ipamorelin, Tesamorelin, Tesamorelin/Ipamorelin, Sermorelin, Hexarelin
- Skin Health & Anti-Aging
- GHK-Cu, AHK-Cu, AHK/GHK-Cu, KLOW, GLOW, Melanotan I, Melanotan II
- Longevity
- NAD+, Epitalon, SS-31, Glutathione, Thymosin Alpha-1
- Sexual Health
- PT-141, Kisspeptin-10, Oxytocin, HCG 5000
Its bulk order program takes 40% off orders of 10 or more vials and 50% off 20 or more, shipped FedEx 2-Day; coupon codes do not combine with bulk pricing. For bulk buyers it also sets up standing orders with volume pricing, bulk certificate documentation and net terms.
Testing: Labs & Certificates of Analysis
Northline Labs' certificate archive holds a certificate for each of 50 lots, every one from Horizon Analytical, which tests identity, quantity and purity by UPLC-MS. Northline Labs says every lot is independently assayed at an accredited laboratory to 99%+ purity.
Prof. Peptide looked up three of these certificates at Horizon Analytical's own records, and each was issued to Northline Labs: AOD-9604 5 mg (report 1029035), TB-500 10 mg (report 1029059) and L-Glutathione 600 mg (report 1029045). Those three certificates' results are below.
Prof. Peptide Verification
Verified · November 12, 2026
Prof. Peptide identified the lab, matched the certificates on its own website, and read every test result.
Lab identified
PassedCertificates verified
Passed3 of 3 matched on Horizon Analytical’s own website.
The three certificates were tested on September 24, 2026.
AOD-9604 5mg · lot DPS-3493339
PassedHorizon Analytical · tested September 24, 2026 · certificate 1029035
- Passed: Identification — AOD-9604 (spec AOD-9604)
- Not graded, a value with no printed limit that Prof. Peptide’s line rule does not cover: Quantitation — 4.71mg (spec 5mg)
- Passed: Purity — 99.66% (spec >98%)
L-Glutathione 600mg · lot DPS-6370095
PassedHorizon Analytical · tested September 24, 2026 · certificate 1029045
- Passed: Identification — L-Glutathione (spec L-Glutathione)
- Not graded, a value with no printed limit that Prof. Peptide’s line rule does not cover: Quantitation — 600.11mg (spec 600mg)
- Passed: Purity — 99.65% (spec >98%)
TB-500 10mg · lot DPS-9594516
PassedHorizon Analytical · tested September 24, 2026 · certificate 1029059
- Passed: Identification — TB-500 (spec TB-500)
- Not graded, a value with no printed limit that Prof. Peptide’s line rule does not cover: Quantitation — 9.97mg (spec 10mg)
- Passed: Purity — 99.72% (spec >98%)
All products are sold for laboratory research use only.
Who tests Northline Labs’ peptides?
Horizon Analytical
- Location
- 16194 W 45th Dr, Ste 108, Golden, Colorado 80403, USA (the address in its terms and policies).
- What its certificates report
- Tests reported on the certificates Prof. Peptide has matched at Horizon Analytical, across vendors: Purity (HPLC) · Net peptide content · Identity · Appearance
- Accreditation
- Claimed by the lab: None. Its compliance policy says it will not use “ISO accredited”, “certified” or similar wording unless the claim is verified, and that a subcontractor’s status does not transfer to Horizon.Accreditation body directories: A2LA: searched, no record found.
- How certificates are checked at the lab
- “Verify Certificate of Analysis” by report number (lot number optional). Reports are private by default and public only if the customer opts in.
- What Prof. Peptide checked for Northline Labs
- Prof. Peptide matched 3 certificates at Horizon Analytical’s own lookup; the lab’s records name Northline Labs as the client.
Payment and shipping
Northline Labs takes payment at purchase. It dispatches in-stock orders the same or next business day, and orders placed on a weekend or holiday the next business day, in plain, unbranded, tamper-evident packaging; the peptides are lyophilized and ship without a cold chain. Tracking is emailed when the label is created, rates are shown at checkout with expedited options, and shipping is free on orders over $250. A shipment whose tracking has not updated within 3 business days is reported to Northline.
Northline Shipping Protection is added at checkout by default and can be switched off. It covers lost, delivered-but-not-received and damaged shipments, which Northline Labs replaces from stock or refunds.
All sales are final, and orders cannot be cancelled or changed once placed. The one exception is a purity-match guarantee: if an independent laboratory's purity result for a lot does not match Northline's certificate for that lot, Northline Labs refunds or replaces it.
Customer service
Northline Labs takes questions by email at hello@northlinelabs.org and through the form on its contact page, which takes an optional order number, Monday to Friday from 9 AM to 5 PM Central.
Research-use terms
- On its site
- Northline Labs marks its products for laboratory research use only and not for human or veterinary consumption.
- Terms page
- northlinelabs.org/ruo-agreement
Sources: Northline Labs's own pages, Northline Labs' homepage (research use only), the footer of its emails, and its RUO agreement page (read by chat 2026-11-11), read November 11, 2026.
Ratings & reviews
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Related pages
Affiliate disclosure: Prof. Peptide earns a commission on purchases and sign-ups made through its links and codes, at no extra cost to the buyer. Commissions never decide which vendors are listed, how they are ranked or verified, or what Prof. Peptide concludes.
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