Northline Labs Reviews (2026): Is Northline Labs Legit?

Jack Ryan

Northline Labs

Evidence score: 8.5/10

Visit Northline Labs ↗

How we scored Northline Labs

Reviewed by Jack Ryan, co-founder & editorial lead · Updated October 3, 2026

COA practices 40%9/10

Reputation 20%9.5/10

Transparency 20%7/10

Operations 20%8.5/10

Weighted factor result: 8.6/10, rounded to 8.5/10 on our half-point scale.

COA evidenceCOA quality 9/10COA verified49 verified reports: 31 Horizon and 18 ILS. One CJC formulation discrepancy remains under review.

Testing labs: Horizon Analytical, ILS Laboratories

Browse 50 certificates in the COA library →

Direct answer

Is Northline Labs legit?

Northline Labs is an operating US research-material storefront with 49 verified reports: 31 Horizon and 18 ILS. PeptidePrices retained all 50 reports across 81 PDFs and 131 pages. One CJC report differs from the official PDF on formulation and remains under review. Trustpilot showed 4.3/5 from 506 reviews. The evidence supports an 8.5/10 rating.

Evidence summary

Northline Labs COAs and evidence

Northline has a working storefront, 49 verified laboratory reports and a large exact-domain review record.

The evidence supports an 8.5/10 rating. The CJC formulation discrepancy remains visible in its report; endotoxin-method wording alone does not disqualify verification.

Certificate review

PeptidePrices retained all 50 Northline reports across 81 PDFs and 131 pages. Thirty-one Horizon reports and 18 ILS reports match official records. The 19 ILS records use different endotoxin-method wording in the saved PDFs and current portal; this is recorded as an informational note, not a verification failure. The retained CJC report identifies a CJC-1295/Ipamorelin blend with 2.58mg and 2.68mg components, while the official PDF identifies CJC-1295 alone. That formulation discrepancy remains separate and excludes the report from product badges.

Independent reviews

The exact-domain Trustpilot profile showed 4.3/5 from 506 reviews on October 3, 2026. The large positive majority includes reports of fast delivery and responsive support; recent one-star reviews describe carrier-scan delays, unanswered messages and packaging concerns.

Shipping and company details

Northline publishes email contact, a COA archive and order terms. It states FedEx delivery in 2–3 days, same- or next-business-day dispatch, plain tamper-evident packaging and free shipping from $250. Its FAQ says orders cannot be canceled or changed and all sales are final. No street address is published.

Measured content

Two Horizon reports show material overfill against their labeled strength: Oxytocin labeled 5mg measured 9.96mg, and Sermorelin labeled 5mg measured 5.8mg. The library presents the measured amount beside the exact report rather than treating more content as automatically better.

Rating

Northline earns 8.5/10 from COA practices 9, reputation 9.5, transparency 7 and operations 8.5. The weighted score is 8.6, rounded to 8.5. The CJC formulation discrepancy and two measured-content overfills keep the COA factor below 10. Affiliate status has no score weight.

October customer update

On October 3, the exact-domain Trustpilot profile showed 4.3/5 from 506 reviews. Recent positive accounts credit packaging and delivery; critical accounts describe slow shipping or unanswered missing-order inquiries. These are purchase experiences, separate from the 49 matched reports and one formulation exception.

Details

Payment methods: Credit/debit card
Purity: 49 verified reports; one CJC formulation discrepancy; 81 PDFs / 131 pages
Shipping: FedEx delivery is stated as 2–3 days, with same- or next-business-day dispatch and free shipping from $250.
Orders are final after placement.

Reviews

No PeptidePrices reader reviews yet.

Trustpilot, 506 reviews →

In stock: 60 products
Ships to: United States
Prices checked: Oct 22, 2026

Products (60)

60 products

Peptide	Price	Package	Stock
GLP-3R5-test panel Verified COA ILS Laboratories	$71.99	10mg	In stock	View listing ↗
GLP-3R5-test panel Verified COA ILS Laboratories	$89.99	15mg	In stock	View listing ↗
GLP-3R5-test panel Verified COA ILS Laboratories	$116.99	20mg	In stock	View listing ↗
GLP-3R5-test panel Verified COA ILS Laboratories	$170.99	30mg	In stock	View listing ↗
GLP-3R	$269.99	50mg	In stock	View listing ↗
GLP-2T5-test panel Verified COA ILS Laboratories	$62.99	10mg	In stock	View listing ↗
GLP-2T	$107.99	20mg	In stock	View listing ↗
GLP-2T	$157.49	30mg	In stock	View listing ↗
GLP-2T	$269.99	60mg	In stock	View listing ↗
GLP-2T	$359.99	100mg	In stock	View listing ↗
GLP-2T	$395.99	120mg	In stock	View listing ↗
BPC-1575-test panel Verified COA ILS Laboratories	$79.19	10mg	In stock	View listing ↗
BPC-1572-test panel Verified COA Horizon Analytical · Analysis date Aug 6, 2026	$94.49	20mg	In stock	View listing ↗
TB-5003-test panel Verified COA Horizon Analytical · Analysis date May 12, 2026	$89.99	10mg	In stock	View listing ↗
MOTS-c5-test panel Verified COA ILS Laboratories	$76.49	10mg	In stock	View listing ↗
MOTS-c5-test panel Verified COA ILS Laboratories	$116.99	40mg	In stock	View listing ↗
NAD+2-test panel Verified COA Horizon Analytical · Analysis date Apr 26, 2026	$80.99	500mg	In stock	View listing ↗
NAD+	$116.99	1000mg	In stock	View listing ↗
Semax3-test panel Verified COA Horizon Analytical · Analysis date May 12, 2026	$80.99	10mg	In stock	View listing ↗
Semax	$107.99	30mg	In stock	View listing ↗
Selank3-test panel Verified COA Horizon Analytical · Analysis date May 12, 2026	$80.99	10mg	In stock	View listing ↗
CJC-1295 (With DAC)	$89.99	5mg	In stock	View listing ↗
Tesamorelin5-test panel Verified COA ILS Laboratories	$71.99	10mg	In stock	View listing ↗
Tesamorelin5-test panel Verified COA ILS Laboratories	$112.49	20mg	In stock	View listing ↗
Ipamorelin2-test panel Verified COA Horizon Analytical · Analysis date Jun 26, 2026	$67.49	10mg	In stock	View listing ↗
Melanotan-1 (MT-1)5-test panel Verified COA ILS Laboratories	$62.99	10mg	In stock	View listing ↗
Glutathione	$71.99	600mg	In stock	View listing ↗
Glutathione2-test panel Verified COA Horizon Analytical · Analysis date Aug 6, 2026	$98.99	1500mg	In stock	View listing ↗
GLP-1S2-test panel Verified COA Horizon Analytical · Analysis date May 3, 2026	$40.49	10mg	In stock	View listing ↗
GLP-1S	$49.49	15mg	In stock	View listing ↗
GLP-1S	$58.49	20mg	In stock	View listing ↗
GLP-1S	$76.49	30mg	In stock	View listing ↗
GLP-1S	$107.10	50mg	In stock	View listing ↗
Cagrilintide3-test panel Verified COA Horizon Analytical · Analysis date Jul 31, 2026	$98.99	10mg	In stock	View listing ↗
Sermorelin	$89.99	10mg	In stock	View listing ↗
IGF-1 LR33-test panel Verified COA Horizon Analytical · Analysis date Jul 22, 2026	$89.99	1mg	In stock	View listing ↗
GHK-Cu (Copper Peptide)5-test panel Verified COA ILS Laboratories	$89.99	100mg	In stock	View listing ↗
Thymosin Alpha-1	$89.99	10mg	In stock	View listing ↗
GLOW	$121.49	70mg	In stock	View listing ↗
KLOW Protocol	$152.99	80mg	In stock	View listing ↗
Wolverine	$98.99	20mg	In stock	View listing ↗
AOD-96042-test panel Verified COA Horizon Analytical · Analysis date Aug 6, 2026	$71.99	5mg	In stock	View listing ↗
AOD-96042-test panel Verified COA Horizon Analytical · Analysis date Aug 6, 2026	$98.99	10mg	In stock	View listing ↗
Hexarelin3-test panel Verified COA Horizon Analytical · Analysis date Aug 11, 2026	$80.99	10mg	In stock	View listing ↗
Dihexa2-test panel Verified COA Horizon Analytical · Analysis date Aug 6, 2026	$71.99	10mg	In stock	View listing ↗
Epithalon (Epitalon)2-test panel Verified COA Horizon Analytical · Analysis date Aug 6, 2026	$79.19	100mg	In stock	View listing ↗
SS-31 (Elamipretide)5-test panel Verified COA ILS Laboratories	$53.99	10mg	In stock	View listing ↗
SS-31 (Elamipretide)	$143.99	50mg	In stock	View listing ↗
Melanotan-2 (MT-2)5-test panel Verified COA ILS Laboratories	$62.99	10mg	In stock	View listing ↗
Oxytocin2-test panel Verified COA Horizon Analytical · Analysis date Aug 11, 2026	$62.99	5mg	In stock	View listing ↗
PT-141 (Bremelanotide)2-test panel Verified COA Horizon Analytical · Analysis date May 3, 2026	$80.99	10mg	In stock	View listing ↗
Kisspeptin-105-test panel Verified COA ILS Laboratories	$89.99	10mg	In stock	View listing ↗
5-Amino-1MQ2-test panel Verified COA Horizon Analytical · Analysis date Aug 6, 2026	$89.99	5mg	In stock	View listing ↗
5-Amino-1MQ2-test panel Verified COA Horizon Analytical · Analysis date Aug 6, 2026	$179.99	50mg	In stock	View listing ↗
SLU-PP-332	$90.89	10mg	In stock	View listing ↗
ARA-290 (Cibinetide)2-test panel Verified COA Horizon Analytical · Analysis date Aug 6, 2026	$71.99	10mg	In stock	View listing ↗
VIP (Vasoactive Intestinal Peptide)5-test panel Verified COA ILS Laboratories	$76.49	10mg	In stock	View listing ↗
Pinealon	$71.99	10mg	In stock	View listing ↗
CJC-1295 No DAC + Ipamorelin2-test panel Verified COA Horizon Analytical · Analysis date Aug 6, 2026	$89.99	10mg	In stock	View listing ↗
CJC-1295 No DAC + Ipamorelin	$143.99	20mg	In stock	View listing ↗

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Market prices collected Oct 22, 2026

Market listing prices

Five cheapest in-stock package prices per compound across every tracked vendor — not just Northline Labs.

Epithalon (Epitalon) listing prices

30 collected daysSep 23, 2026 – Oct 22, 2026

Latest Oct 22, 2026$19.99$23.39$24.99$25.00$25.00

30 collected days and prices

Cheapest in-stock listing prices by collected day
Date	Rank 1	Rank 2	Rank 3	Rank 4	Rank 5
Oct 22, 2026	$19.99	$23.39	$24.99	$25.00	$25.00
Oct 21, 2026	$19.99	$23.39	$24.99	$25.00	$25.00
Oct 20, 2026	$19.99	$23.39	$24.00	$24.99	$25.00
Oct 19, 2026	$19.99	$23.39	$24.00	$24.99	$25.00
Oct 18, 2026	$19.79	$19.99	$23.39	$24.00	$24.99
Oct 17, 2026	$19.79	$23.39	$24.00	$24.99	$25.00
Oct 16, 2026	$19.79	$23.39	$24.00	$24.99	$25.00
Oct 15, 2026	$22.00	$23.39	$24.00	$24.99	$25.00
Oct 14, 2026	$19.79	$22.00	$23.39	$24.00	$24.99
Oct 13, 2026	$19.79	$23.39	$24.00	$24.74	$24.99
Oct 12, 2026	$19.79	$20.00	$23.39	$24.00	$24.74
Oct 11, 2026	$19.79	$20.00	$23.39	$24.00	$24.74
Oct 10, 2026	$19.79	$19.99	$20.00	$23.39	$24.00
Oct 9, 2026	$19.79	$19.99	$20.00	$23.39	$24.00
Oct 8, 2026	$19.79	$19.99	$20.00	$23.39	$24.00
Oct 7, 2026	$19.99	$23.39	$24.00	$25.00	$25.00
Oct 6, 2026	$19.99	$23.39	$24.00	$25.00	$26.32
Oct 5, 2026	$19.99	$23.39	$24.00	$25.00	$26.32
Oct 4, 2026	$19.99	$23.39	$24.00	$25.00	$26.32
Oct 3, 2026	$19.99	$23.39	$24.00	$25.00	$26.32
Oct 2, 2026	$19.99	$23.39	$24.00	$25.00	$26.32
Oct 1, 2026	$19.99	$23.39	$24.00	$25.00	$26.32
Sep 30, 2026	$19.99	$23.39	$24.00	$25.00	$26.32
Sep 29, 2026	$19.99	$23.39	$24.00	$25.00	$26.32
Sep 28, 2026	$19.99	$23.39	$24.00	$25.00	$26.32
Sep 27, 2026	$19.99	$23.39	$24.00	$25.00	$26.32
Sep 26, 2026	$19.99	$23.39	$24.00	$25.00	$26.32
Sep 25, 2026	$19.99	$23.39	$24.00	$25.00	$26.32
Sep 24, 2026	$19.99	$23.39	$26.32	$26.73	$26.95
Sep 23, 2026	$19.99	$23.39	$26.32	$26.95	$27.00

Vendors in the cheapest five

5 / 15

Vendors that appeared in the five cheapest listings, with collected days and the last top-five package price.
Vendor	Days in five	Last top-five package
Pure Peptides UK	30	$23.39 Oct 22, 2026
Real Peptides	26	$24.00 last in top five Oct 20, 2026
IDUN Peptides	23	$19.99 Oct 22, 2026
Evolve Peptides	17	$25.00 Oct 22, 2026
Alpha Peptides	14	$26.32 last in top five Oct 6, 2026

Top 5 of 15 vendors that reached the cheapest five

GLP-3R listing prices

30 collected daysSep 23, 2026 – Oct 22, 2026

Latest Oct 22, 2026$23.00$24.95$25.99$27.00$27.00

30 collected days and prices

Cheapest in-stock listing prices by collected day
Date	Rank 1	Rank 2	Rank 3	Rank 4	Rank 5
Oct 22, 2026	$23.00	$24.95	$25.99	$27.00	$27.00
Oct 21, 2026	$23.00	$24.95	$25.99	$27.00	$27.00
Oct 20, 2026	$23.00	$24.95	$25.99	$27.00	$27.00
Oct 19, 2026	$23.00	$24.95	$25.99	$27.00	$27.00
Oct 18, 2026	$25.99	$27.00	$27.00	$27.00	$30.00
Oct 17, 2026	$25.99	$27.00	$27.00	$27.00	$30.00
Oct 16, 2026	$25.99	$27.00	$27.00	$27.00	$30.00
Oct 15, 2026	$25.99	$27.00	$27.00	$27.00	$28.99
Oct 14, 2026	$25.99	$27.00	$27.00	$27.00	$30.00
Oct 13, 2026	$25.99	$27.00	$27.00	$27.00	$28.99
Oct 12, 2026	$25.00	$25.99	$27.00	$27.00	$28.99
Oct 11, 2026	$25.00	$25.99	$27.00	$27.00	$28.99
Oct 10, 2026	$25.00	$25.99	$27.00	$27.00	$28.99
Oct 9, 2026	$25.00	$25.99	$27.00	$27.00	$28.99
Oct 8, 2026	$25.99	$27.00	$27.00	$27.00	$28.99
Oct 7, 2026	$25.99	$27.00	$27.00	$27.00	$28.99
Oct 6, 2026	$24.95	$25.99	$27.00	$27.00	$27.00
Oct 5, 2026	$24.95	$25.00	$25.99	$27.00	$27.00
Oct 4, 2026	$24.95	$25.00	$25.99	$27.00	$27.00
Oct 3, 2026	$24.95	$25.00	$25.99	$27.00	$28.99
Oct 2, 2026	$24.95	$25.00	$25.99	$27.00	$28.99
Oct 1, 2026	$20.21	$25.99	$27.00	$28.99	$30.00
Sep 30, 2026	$20.21	$25.99	$27.00	$28.99	$30.00
Sep 29, 2026	$20.21	$25.99	$27.00	$28.99	$30.00
Sep 28, 2026	$20.21	$25.99	$27.00	$28.99	$30.00
Sep 27, 2026	$20.21	$25.99	$27.00	$30.00	$30.00
Sep 26, 2026	$20.21	$25.99	$27.00	$30.00	$30.00
Sep 25, 2026	$20.21	$25.99	$27.00	$28.00	$30.00
Sep 24, 2026	$20.21	$27.00	$28.00	$30.00	$30.00
Sep 23, 2026	$24.95	$27.00	$30.00	$35.00	$35.00

Vendors in the cheapest five

5 / 11

Vendors that appeared in the five cheapest listings, with collected days and the last top-five package price.
Vendor	Days in five	Last top-five package
Lost Coast Aminos	30	$23.00 Oct 22, 2026 -14.8%
Modern Research Peptides	28	$25.99 Oct 22, 2026
Step One Ventures	19	$27.00 Oct 22, 2026
Vector Amino Labs	19	$27.00 Oct 22, 2026
Rocky Mountain Compounds	18	$24.95 Oct 22, 2026

Top 5 of 11 vendors that reached the cheapest five

BPC-157 listing prices

30 collected daysSep 23, 2026 – Oct 22, 2026

Latest Oct 22, 2026$15.99$18.00$18.69$19.99$21.99

30 collected days and prices

Cheapest in-stock listing prices by collected day
Date	Rank 1	Rank 2	Rank 3	Rank 4	Rank 5
Oct 22, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 21, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 20, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 19, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 18, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 17, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 16, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 15, 2026	$15.99	$18.00	$18.69	$21.99	$21.99
Oct 14, 2026	$15.83	$15.99	$18.00	$18.69	$19.99
Oct 13, 2026	$15.83	$15.99	$18.00	$18.69	$19.99
Oct 12, 2026	$15.83	$15.99	$17.99	$18.69	$19.82
Oct 11, 2026	$15.83	$15.99	$18.69	$19.82	$19.99
Oct 10, 2026	$15.83	$15.99	$17.99	$18.69	$19.82
Oct 9, 2026	$15.83	$15.99	$18.69	$19.99	$21.99
Oct 8, 2026	$15.83	$15.99	$18.69	$19.99	$20.00
Oct 7, 2026	$15.99	$18.69	$19.99	$21.99	$21.99
Oct 6, 2026	$15.99	$18.69	$19.99	$21.99	$21.99
Oct 5, 2026	$15.99	$18.69	$19.99	$21.99	$22.44
Oct 4, 2026	$15.99	$18.69	$19.99	$21.99	$22.44
Oct 3, 2026	$15.99	$18.69	$19.99	$19.99	$21.99
Oct 2, 2026	$15.99	$18.69	$19.99	$19.99	$21.99
Oct 1, 2026	$15.99	$18.69	$19.99	$19.99	$20.25
Sep 30, 2026	$10.00	$15.99	$18.69	$19.99	$19.99
Sep 29, 2026	$10.00	$15.99	$18.69	$19.99	$19.99
Sep 28, 2026	$10.00	$15.99	$18.69	$19.99	$19.99
Sep 27, 2026	$10.00	$15.99	$18.69	$19.99	$19.99
Sep 26, 2026	$10.00	$15.99	$18.69	$19.99	$19.99
Sep 25, 2026	$10.00	$15.99	$18.69	$19.99	$19.99
Sep 24, 2026	$10.00	$18.69	$19.99	$19.99	$20.00
Sep 23, 2026	$10.00	$15.99	$18.69	$19.99	$19.99

Vendors in the cheapest five

5 / 13

Vendors that appeared in the five cheapest listings, with collected days and the last top-five package price.
Vendor	Days in five	Last top-five package
Pure Peptides UK	30	$18.69 Oct 22, 2026
MS Peptides	29	$15.99 Oct 22, 2026
Peptide Giants	27	$19.99 Oct 22, 2026
CertaPeptides	13	$22.44 last in top five Oct 5, 2026 +12.3%
Legion Peptides	12	$21.99 Oct 22, 2026

Top 5 of 13 vendors that reached the cheapest five

Frequently asked questions

Is Northline Labs legit?: Northline Labs is an operating US research-material storefront with 49 verified reports: 31 Horizon and 18 ILS. PeptidePrices retained all 50 reports across 81 PDFs and 131 pages. One CJC report differs from the official PDF on formulation and remains under review. Trustpilot showed 4.3/5 from 506 reviews. The evidence supports an 8.5/10 rating. Northline Labs scores 8.5/10 on PeptidePrices' evidence rubric: 40% COA practices, 20% community reputation, 20% transparency, and 20% operations. Affiliate relationships are disclosed on this page and are not a scoring factor.
Where does Northline Labs ship?: Northline Labs ships to United States. FedEx delivery is stated as 2–3 days, with same- or next-business-day dispatch and free shipping from $250. Orders are final after placement.
Does Northline Labs publish COAs?: COA verified. 49 verified reports: 31 Horizon and 18 ILS. One CJC formulation discrepancy remains under review.
What do customer reviews say about Northline Labs?: Trustpilot showed 4.3/5 from 506 exact-domain reviews during PeptidePrices' latest check. Customer reviews describe service and delivery; they do not verify product identity or laboratory results.
What are alternatives to Northline Labs?: The public vendors closest to Northline Labs' 8.5/10 evidence score are NextGenPeps (8.5/10), NeuroLabs (8.5/10), and Optima Supply (8.5/10). For a head-to-head review, see our Northline Labs vs NeuroLabs comparison.
Does Northline Labs publish verified COAs?: Yes. PeptidePrices verified 31 Horizon and 18 ILS reports and retained all 81 PDFs across 131 pages. The ILS endotoxin-method wording difference is informational. One CJC formulation discrepancy remains under review.
Does Northline Labs have a coupon code?: No public customer coupon has been confirmed.
How does Northline Labs ship?: Northline states FedEx delivery takes 2–3 days, with same- or next-business-day dispatch and free shipping from $250. All sales are final.