BENCHMARK PROFILE
Northline Labs
Latest sync: Sep 18, 2026, 9:33 PM. Source coverage currently reflects PB Evidence data.
REFERRAL OFFER
Affiliate link active via referral link
PeptideBenchmark referral attribution is active through /ref/132/, and ?ref=132 works on product URLs directly. No PeptideBenchmark coupon code or automatic shopper discount is confirmed. The referral cookie is set for 1 day (the storefront configures AffiliateWP expiration=1), so attribution does not survive a later return visit. The affiliate relationship does not change the standing finding that 14 of 43 products display a browser-generated certificate with no underlying laboratory document.
PeptideBenchmark has a disclosed affiliate relationship with Northline Labs. This does not change benchmark scores or trust ratings — it only affects outbound links and pricing-board discount modeling where applicable.
Readers who want the tested part of the catalog backed by third-party COAs they can independently confirm at two different labs' own lookups.
Only the products with a real certificate on file are backed by verifiable testing. 14 of the 43 catalog products have no third-party COA, and for those the site's interactive COA viewer generates a placeholder lot number and test panels rather than showing a real report — rendered to look identical to the genuine cards. Treat an on-page "certificate" as evidence only when it opens the actual lab PDF. Fixed blends (GLOW, KLOW, and the component-pair sets) are mapped to their labeled vial total for $/mg comparison; hCG 5,000 IU appears in IU hormones, while bacteriostatic water remains outside Pricing.
Read the full finding: which products show fabricated COAs →
A WooCommerce storefront whose tested products carry downloadable third-party COAs from two independently queryable labs — Horizon Analytical and ILS Laboratories — every certificate confirmable against the issuing lab under the Northline Labs client name, at ~99.3% reported purity.
Most of the injectable catalog links a downloadable Certificate of Analysis issued by one of two third-party labs. Horizon Analytical reports (purity by UPLC/MS plus a separate endotoxin certificate) resolve by lot number at horizonanalytical.com; ILS Laboratories reports (HPLC purity and identity, net-peptide content, and endotoxin) resolve by COA number at ils-lab.com. Every certificate was two-factor confirmed — the vendor's lot or COA number is resolved against the lab's own public record and the returned client name is matched to Northline Labs — so the report is reached at the lab, not just hosted by the vendor. Reported purity runs near 99.3%.
Tested products link a vendor-hosted COA PDF issued by Horizon Analytical or ILS Laboratories. Each Horizon lot (NLL-…) is searchable at horizonanalytical.com and each ILS COA number resolves at ils-lab.com; both return the report under the Northline Labs client name, so a reader can confirm the certificate at the issuing lab rather than trusting the vendor's upload.
This vendor is one of 119 names currently included in our manual curated research-vendor layer.
This is the strongest public transparency pattern on the site. The key signal is that readers can leave the vendor domain and inspect reports or verification pages on an outside provider domain without needing to log in.
- Treat the outside provider route as the strongest part of the evidence, not the vendor marketing copy around it.
- Look for repeated product-level behavior across the catalog, not just one showcase example.
- Do not overread it as proof that every current lot is covered or current unless the linked report trail itself supports that.
This vendor makes the most sense when you compare it to other vendors using a similar transparency model, rather than to every vendor on the board at once.
PB Curated Assessment is a PeptideBenchmark-authored rubric built from the trust and transparency review layer. It is separate from the source-derived benchmark score.
Northline Labs is currently one of the strongest curated cases on the site because readers can inspect a repeatable public evidence trail without logging in.
Readers can leave the vendor marketing layer and inspect verification publicly.
This is the strongest public pattern because the verification step routes into an outside provider layer.
Current review touched 38 products and 64 document/link destinations.
2 named lab signal(s) and 1 certification category signal(s) are currently visible in the reviewed evidence.
Score 9.2 from pb evidence score.
PB Curated Assessment: Strong. This is our own trust/transparency rubric and is kept separate from the PB score.
Under the formula retired on Aug 28, 2026 this vendor scores 9.20 — the live evidence-first score is 7.28 (-1.92). What changed and why: scoring methodology.
Observed from public domain records and the vendor's own site on Aug 27, 2026. Identity facts are shown for context and do not affect scores.
Assayed content is not fill accuracy. Laboratories report net peptide content, and peptides ship as salts, so an honestly filled vial commonly assays below its gross label — a figure under 100% is not evidence of a short vial. These numbers are also not comparable between vendors: they exist only where a laboratory reports net content, so they partly reflect which laboratory a vendor uses.
1 of this vendor's 64 certificates with indexed embedded images contains a reviewed byte-identical chromatogram that also appears in certificate contexts associated with Value Research Labs. This is consistent with shared lot, but does not establish a sale or supply-chain direction.
These certificates contain a reviewed byte-identical instrument trace, meaning one analysis was reported in more than one brand context. That supports a shared-lot interpretation, but cannot establish whether either brand sold the lot or who supplied whom.How this is measured →
Holding a certificate for this vendor that is not here?Send it to the archive →
Same third-party review signals shown on the vendor board. Click Trustpilot or Pep Review Pro to open the source profile.
PB score is the number you should read first on this page. It starts with trust evidence, pricing coverage, and third-party review signals from Finnrick, Peptide Critic, Trustpilot, and Pep Review Pro when available. Reviewed transparency evidence contributes a bounded amount — shown as a trust lift for source-benchmarked vendors, and folded into the base score for PB-evidence vendors.
This vendor’s score is evidence-first: verifiable testing evidence forms the backbone, and outside review sources are a bounded adjustment that can warn far more than it can boost. The terms below sum to the displayed score (small rounding aside). Full formula on the scoring methodology page.
WHAT THIS PAGE IS
- Board-ranked vendor profile with source-linked benchmark inputs
- No Finnrick score currently linked
- No Peptide Critic score currently linked
- Includes Trustpilot review coverage
- No Pep Review Pro profile currently linked
CURRENT LIMITS
- Not an original lab test or editorial review
- Source scales and methodologies differ across sites
- Depends on source site freshness and formatting
These are representative public examples from the vendor testing review queue. They show how product pages in the catalog expose public report or verification paths, but they should still be read as examples rather than proof for every current lot.
In other words: the relationship registry above captures the vendor-to-provider link itself, while the examples below show what that link looks like across real product pages.
METHODOLOGY
How to read this benchmark
This profile summarizes public benchmark data synced from Finnrick and, when available, Peptide Critic. Finnrick contributes a 10-point average from its vendor table, while Peptide Critic contributes a 5-star rating that we normalize to a 10-point scale before ranking consensus entries.
A high score can be directionally useful, but it is not a substitute for current COAs, identity testing, chain-of-custody details, or your own due diligence. We are intentionally separating source aggregation from first-party editorial claims.
Scores combine PB trust evidence with external signals from Finnrick, Peptide Critic, Trustpilot, and Pep Review Pro when available.