Head-to-head · same rubric · verified 10 October 2026

Purgo Labs vs Northline Labs

Verdict: Purgo Labs, on the evidence: 10/10 rubric points against 8/10. Northline Labs is stronger on 3 points listed below.

Our pick · partner

Purgo Labs

4.8 (101 reviews)

Lab: SteriGenix

Non-partner

Northline Labs

4.3 (514 reviews)

Lab: Horizon Analytical

Purgo
ahead on the rubric: 2/2
vials Purgo cheaper at list: 2/2
vials Purgo cheaper after codes: 3
points Northline Labs is stronger on

30% off eligible products with codeaffiliate code, disclosed · not a ranking input

Visit Purgo Labs

Disclosure: Purgo Labs is our affiliate partner; we earn nothing from Northline Labs. Scores come from the public rubric, which has no partnership input.

Research use only. Compound Review scores vendors on documentation — laboratory certificates, lot records, pricing and company identity. Nothing on this page is guidance on human or veterinary use, dosing or health outcomes.

Where each vendor is stronger

Computed from the rubric, prices and review record — never curated

Purgo Labs

No contradictions among its own claims — No contradictions found across site claims (checked Aug 2026)
No misleading trust signals or buyer-protection workarounds — No on-site review badge contradicting the independent record; card payment accepted; no regulator action found (checked 6 Sep 2026)
Lower list price on 2 of 2 like-for-like rows.

Northline Labs

Larger independent review base: 4.3 (514 reviews) vs Purgo's 4.8 (101 reviews).
Re-checked 10 October 2026: Trustpilot 4.3 across 514 reviews, 77% five-star / 11% one-star (unchanged since 2026-10-09). Prices: last read 2 October 2026 by the weekly capture.
Horizon Analytical printed on the BPC-157 certificate (lot NLL-1444543), 'Searchable via horizonanalytical.com'; the report states 19.82mg measured vs 20mg spec, 99.4% purity (analysis 8 Aug 2026).

The 10 criteria, side by side

10/10 vs 8/10 · one point each, no weighting

Named lab

Purgo

SteriGenix and Freedom Diagnostics named per lot

Northline

Horizon Analytical printed on the BPC-157 certificate (lot NLL-1444543, 'Searchable via horizonanalytical.com') — read 6 Sep 2026

Lab-hosted COAs

Purgo

Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com

Northline

Certificate states 'Searchable via: horizonanalytical.com' (lab-side lookup)

Per-lot COAs

Purgo

Lot numbers (e.g. PL-BPC-05) with test dates per batch

Northline

Lot-traceable COA lookup per order

Net content

Purgo

Measured net peptide published per lot (e.g. BPC-157 lot PL-BPC-05: 11.16mg vs 10mg label)

Northline

Certificate reports 19.82mg measured vs 20mg spec, 99.4% purity (analysis 8 Aug 2026)

Ungated

Purgo

COAs on product pages without login

Northline

COA lookup public

Review base

Purgo

4.7 / 101 on Trustpilot, claimed; three reviews below four stars, all replied to (complaint read 9 Oct 2026; was 4.7 / 99 on 2 Oct)

Northline

4.3 / 501 on Trustpilot (re-read 2 Oct 2026; was 4.3 / 495 on Trustpilot)

Consistent claims

Purgo

No contradictions found across site claims (checked Aug 2026)

NorthlineNot awarded

Sized pricing

Purgo

Product pages state vial size with price (e.g. BPC-157 10mg at $44.99; 24 dated size+price readings on record)

Northline

Sizes in product names for single-size items

Entity + address

Purgo

PurgoLabs LLC (Arizona) · 10105 E Via Linda St Bld 103, Scottsdale, AZ — on-site (6 Sep 2026)

Northline

WA Consulting LLC ("Northline Labs is a brand of WA Consulting LLC", /about-northline/) · 30 N Gould St STE R, Sheridan, WY 82801 on /contact/ — a registered-agent suite, disclosed as such (read 24 Sep 2026)

Clean record

Purgo

No on-site review badge contradicting the independent record; card payment accepted; no regulator action found (checked 6 Sep 2026)

NorthlineNot awarded

Like-for-like prices

price history across vendors

Vial	Purgo · after HEALTH	Northline Labs	Lower
Ipamorelin 10mg	$38.49 $54.99read 8 Nov 2026	$74.99read 2 Oct 2026	Purgo Labs
TB-500 10mg	$34.99 $49.99read 8 Nov 2026	$99.99read 2 Oct 2026	Purgo Labs

Only vials both vendors list at the same size, read on each vendor's product page on the date shown. "After code" is list × the code's stated discount — a calculation, labelled as one; stacking with sale pricing is not cart-tested.

What we found at Northline Labs

Read 10 October 2026 on the vendor's own pages

The certificate is good and now there is a company name behind the brand; the homepage review badge is not, and the vendor's first Trustpilot profile was taken down. Not an affiliate partner.

Evidence ledger · read 10 October 2026

4 verified1 contradiction2 flags3 could not verify

Verified — what we opened, with the date

VerifiedRe-checked 10 October 2026

Trustpilot 4.3 across 514 reviews, 77% five-star / 11% one-star (unchanged since 2026-10-09). Prices: last read 2 October 2026 by the weekly capture.

source

VerifiedHorizon Analytical printed on the BPC-157 certificate

(lot NLL-1444543), 'Searchable via horizonanalytical.com'; the report states 19.82mg measured vs 20mg spec, 99.4% purity (analysis 8 Aug 2026).

source

VerifiedLegal entity now published

'Northline Labs is a brand of WA Consulting LLC' on the About page, with a Sheridan, WY address on the Contact page (24 Sep 2026).

source

Verified4.3 across 495 Trustpilot reviews on the active northlinelabs.org profile

(read 24 Sep 2026).

source

Contradiction — the vendor's claims disagree with each other or with the evidence

ContradictionHomepage badge '4.8★ 12,000+ reviews' vs the live Trustpilot profile at 4.3 across 495 reviews

(24 Sep 2026); an earlier version of the same page showed 12,000+ and 1,200+ side by side.

source

Flag — read before ordering

FlagThe original northlinelabs.com Trustpilot profile was removed by Trustpilot with a guidelines notice

(18 Sep 2026); the vendor now points to a northlinelabs.org profile.

source

FlagAll sales final

no returns, refunds or cancellations once placed (Terms, 24 Sep 2026).

source

Could not verify — not on the record either way

Could not verifyThe laboratory is never named in page text

'an accredited laboratory' on /quality/ — only on the certificate.

source

Could not verifyThe published address, 30 N Gould St STE R, Sheridan, WY, is a registered-agent suite used by many companies, not an operating location.

—

Could not verifyThe most recent visible Trustpilot review is dated 24 Jun 2026

three months of silence on a 495-review profile.

—

WA Consulting LLC · 30 N Gould St STE R, Sheridan, WY 82801 (registered-agent address) — About and Contact pages (24 Sep 2026) source

Certificates we opened at Northline Labs

COA library

Certificate of analysis · as we read it

Horizon Analytical

Is this lab legit? What we checked

Vendor-hosted document

Read 6 Sep 2026

Product

BPC-157 · 20mg label

Lot / batch

not printed

Report ID

lot NLL-1444543 (searchable via horizonanalytical.com)

Test date

8 Aug 2026

Purity

99.4%

Measured

19.82mg

Net content vs label99.1% of 20mg

0label 20mg130%

One vial measured.

Verify at the lab Transcribed by Compound Review; the laboratory's report is the record.

Check it yourself: Certificate states 'Searchable via: horizonanalytical.com' — look up the lot number on the lab's site. The button above opens the lab's lookup.

Where Northline Labs ranks by compound

Northline Labs appears in 2 of our compound rankings. Each ranking orders every scored vendor that sells the compound by rubric score, then verified price per mg.

#17 of 39among the best Ipamorelin vendors · $74.99 at 10mg
#33 of 74among the best TB-500 vendors · $99.99 at 10mg

Score history and the caveats

A score only moves when the evidence does

14 Aug 20264/8 — initial public baseline (rubric v1)
6 Sep 20268/10 — re-issued under rubric v2 (was 4/8); not awarded: claims-consistent, identity
18 Sep 20268/10 — score unchanged — review-base evidence re-pointed: northlinelabs.com Trustpilot profile removed (guidelines notice), active northlinelabs.org profile 4.3 / 491 read directly 18 Sep 2026; vendor site now at northlinelabs.org
24 Sep 20268/10 — 8/10 → 8/10 (one up, one down) — identity awarded: 'Northline Labs is a brand of WA Consulting LLC' (/about-northline/) and a Sheridan, WY street address on /contact/ (a registered-agent suite, disclosed); clean-record withdrawn: homepage badge '4.8★ 12,000+ reviews' overstates the live Trustpilot profile (4.3 / 495). Still not awarded: claims-consistent

Purgo Labs: the caveat

Smaller independent review base than several competitors (101 reviews). The catalog is peptide-focused, so researchers also working with SARMs or broader research chemicals will need a second supplier.

Northline Labs: the caveat

Its original northlinelabs.com Trustpilot profile was removed by Trustpilot with a guidelines notice (read 18 Sep 2026); the vendor moved to northlinelabs.org, where an active profile shows 4.3 across 491 reviews. The lab (Horizon Analytical) appears only on the certificate PDF, never in page text; the legal entity (WA Consulting LLC) and a Sheridan, WY registered-agent address appeared on /about-northline/ and /contact/ by 24 Sep 2026; pricing is above Purgo Labs on the verified Ipamorelin comparison.

Where the evidence points

Purgo Labs 10/10

We earn nothing from Northline Labs. Purgo Labs holds every rubric point — certificates checkable at the lab, measured net content per lot — and is cheaper after codes on 2 of 2 like-for-like vials.

30% off eligible products with

Visit Purgo Labs

Affiliate links, disclosed. Purgo Labs is our primary partner; we earn nothing from Northline Labs. Partnership is not a rubric input.

Vendors to read next to this one

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Also tested at Horizon Analytical

Same score on the rubric (8/10)

Readers also check

Questions readers ask

Is Purgo Labs better than Northline Labs?

Purgo Labs, on the evidence: 10/10 rubric points against 8/10. Northline Labs is stronger on 3 points listed below. Every point is a fact you can check on either vendor's site; both are scored by the same published rubric.

Is Northline Labs legit?

Northline Labs scores 8/10 on our rubric, has an independently viewable rating of 4.3 (514 reviews), and names its lab (Horizon Analytical (on certificates)). Caveat: Its original northlinelabs.com Trustpilot profile was removed by Trustpilot with a guidelines notice (read 18 Sep 2026); the vendor moved to northlinelabs.org, where an active profile shows 4.3 across 491 reviews. The lab (Horizon Analytical) appears only on the certificate PDF, never in page text; the legal entity (WA Consulting LLC) and a Sheridan, WY registered-agent address appeared on /about-northline/ and /contact/ by 24 Sep 2026; pricing is above Purgo Labs on the verified Ipamorelin comparison.

Which is cheaper, Purgo Labs or Northline Labs?

On the 2 compound-and-size rows where we have dated prices from both, Northline Labs lists lower on 0 and Purgo Labs on 2. Purgo's list prices drop 30% with code HEALTH through 24 Nov.

Do you earn money from either vendor?

Purgo Labs is our affiliate partner and we earn a commission on referred orders; we earn nothing from Northline Labs. Scores come from the rubric, which has no partnership input, and the ordering rule on our scoreboard is disclosed.

Purgo Labs vs Northline Labs

Where each vendor is stronger

Purgo Labs

Northline Labs

The 10 criteria, side by side

Like-for-like prices

What we found at Northline Labs

Certificates we opened at Northline Labs

Where Northline Labs ranks by compound

Score history and the caveats

Where the evidence points

Vendors to read next to this one

Questions readers ask

Is Purgo Labs better than Northline Labs?

Is Northline Labs legit?

Which is cheaper, Purgo Labs or Northline Labs?

Do you earn money from either vendor?

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