Seller record · northlinelabs.org

Northline Labs

By Paul Harris, Standards EditorRecorded September 2026 · Standard v1.1 · How checks are performed

Fails 4 of 8 criteria. S1, prescriber requirement: No clinician appears anywhere on the site, and the research use agreement sells every product for in vitro laboratory research only. 3 more criteria also fail; see the table below.

At a glance

Northline Labsnorthlinelabs.org

4/8criteria passed

Price: Retatrutide from $79.99 for a 10 mg vial
Sells: retatrutide, research-grade semaglutide, research-grade tirzepatide, and 15 more
FDA letters: None on file

Visit Northline Labs See all eight dispositions

Research vendor. Passes 4 of 8 criteria. Recorded against Standard v1.1.

A research peptide store selling retatrutide, semaglutide and tirzepatide under coded names such as Reta GLP-3, alongside about forty-five other compounds with an open cart. Its certificate archive links public reports from ILS Laboratories and Horizon Analytical, and no page names a company or an address.

Operating entity No legal entity name appears in the footer, on the contact page, in the terms or in the privacy policy.

Dispositions

Code	Criterion	Disposition	Where it appears
S1	Prescriber requirement	FAIL	northlinelabs.org/ruo-agreement/
S2	Prescription gating	FAIL	northlinelabs.org/product/reta-glp-3/
S3	Pharmacy identification	FAIL	northlinelabs.org/terms-of-services/
S4	Compounding disclosure	PASS	northlinelabs.org
S5	Analytical documentation	PASS	northlinelabs.org/coas/
S6	Business address	FAIL	northlinelabs.org/contact/
S7	Price disclosure	PASS	northlinelabs.org/product/reta-glp-3/
S8	Enforcement status	PASS	FDA warning-letter index

Evidence, criterion by criterion

The evidence behind each disposition in the table above, where it appears, and its date.

S1FAILNo clinician appears anywhere on the site, and the research use agreement sells every product for in vitro laboratory research only.Source: northlinelabs.org/ruo-agreement/.

S2FAILProducts add to cart directly from the product page, and no eligibility step stands between the cart and checkout.Source: northlinelabs.org/product/reta-glp-3/.

S3FAILNo pharmacy is named anywhere on the site, and the terms describe every product as a research material rather than a drug.Source: northlinelabs.org/terms-of-services/.

S4PASSThe seller offers no compounded drug, and every page footer states that the products serve laboratory research only and are not for human consumption.Source: northlinelabs.org.

S5PASSThe certificate archive links a public ILS Laboratories certificate reporting 99.86 percent HPLC purity on retatrutide lot NLL-5525011, and other lots carry Horizon Analytical reports.Source: northlinelabs.org/coas/.

S6FAILNo street address appears on the footer, contact, terms or privacy pages, and the contact page offers only an email address and business hours.Source: northlinelabs.org/contact/.

S7PASSThe retatrutide page prints $79.99 for one 10 mg vial and the semaglutide page prints $44.99 for one 10 mg vial, with no account required to see either price.Source: northlinelabs.org/product/reta-glp-3/.

S8PASSNo FDA warning letter names Northline Labs, and no action has halted the business.Source: FDA warning-letter index.

Products shown on the seller's own pages at the recorded date: retatrutide, research-grade semaglutide, research-grade tirzepatide, cagrilintide, BPC-157, TB-500, GHK-Cu, NAD+, MOTS-c, PT-141, tesamorelin, ipamorelin, sermorelin, semax, epitalon, glutathione, KPV, peptide blends.

Other sellers of the same products

Who sells semaglutide Who sells tirzepatide Who sells sermorelin Who sells NAD+Who sells glutathione Who sells PT-141 Who sells GHK-Cu Who sells tesamorelin Who sells BPC-157 Who sells TB-500 Who sells MOTS-c Who sells semax Who sells epitalon Who sells ipamorelin Who sells cagrilintide Who sells retatrutide

Unpaid link. Northline Labs does not pay the site, and nothing is earned when it is used. Funding.

Visit Northline Labs

127 sellers pass S1, prescriber requirement

Records dated August 2026

Records dated September 2026

See all 127 on the S1 criterion page — 119 more than shown here.

This seller fails criteria a medical service must meet. The records above belong to sellers that pass S1; some are partner links, disclosed on their records.

Dispositions recorded against Standard v1.1. Method and null semantics: how checks are performed. This record is not a review and contains no medical advice.