Great Northern Peptides Review: Is It Legit? Canada COAs

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Great Northern Peptides

Evidence score: 8.5/10

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How we scored Great Northern Peptides

COA practices 40%9/10

Reputation 20%7.5/10

Transparency 20%9/10

Operations 20%9/10

Weighted factor result: 8.7/10, rounded to 8.5/10 on our half-point scale.

COA evidenceCOA quality 9/10COA verifiedCOA quality 9/10 · 45 of 47 published certificate images carry an official laboratory record

Browse 47 certificates in the COA library →

Direct answer

Is Great Northern Peptides legit?

Yes. We rate Great Northern Peptides 8.5/10. Of 47 certificate images published across its catalog, 45 resolve to an issuing laboratory record: 41 Freedom Diagnostics images and four Janoshik images representing three distinct reports. The Freedom reports name Great Northern Peptides as the client and show identity, purity, and measured content. One Freedom search code returns no file, and one gallery image is a sample photograph. The store ships within Canada, takes credit card and Interac e-Transfer, and code peptideprices took 10% off a CA$90 Retatrutide vial in a September 20 cart test.

Evidence summary

What PeptidePrices found

We rate Great Northern Peptides 8.5/10. The company publishes a certificate image on its product pages, and 45 of the 47 published certificate images carry an official laboratory record: 41 Freedom Diagnostics PDFs that name Great Northern Peptides as the client with identity, purity, and measured net content, and four Janoshik images from three distinct reports that resolve on the laboratory's own verifier.

One Freedom search code returns no issuer file, and one Janoshik gallery image is a sample photograph. Trustpilot removed the exact-domain profile, leaving no readable independent customer-review record. The certificate coverage, working card checkout, and published Canadian shipping terms support the 8.5/10 rating.

Certificate program

Great Northern Peptides publishes certificate images across its catalog. PeptidePrices matched 45 of 47 images to official laboratory records: 41 Freedom Diagnostics images and four Janoshik images from three distinct reports. The Freedom documents print a client, accession number, search code, identity, purity, and measured content. The Janoshik records cover HCG 10,000 IU (task 168279), HMG 75 IU (task 103622), and Retatrutide 10mg (task 226374). The reports do not include endotoxin or sterility panels. One Freedom code returns no file, and one Janoshik gallery image is a sample photograph rather than a report.

Review record

PeptidePrices found no readable independent customer-review record for the exact domain. Trustpilot states that the profile has been removed and that the business is no longer visible on its platform, and the storefront publishes no customer rating or order count. The owner set the reputation factor at 7.5/10 with this customer-review gap visible.

Catalog, ordering, and shipping

The current comparison catalog has 35 product-and-strength rows priced in Canadian dollars. Great Northern sells only within Canada. Code peptideprices reduced a CA$90 Retatrutide 10mg vial to CA$81 in a September 20 cart test. Checkout takes credit card and Interac e-Transfer. Canada Post Express Post costs CA$20, with free delivery over CA$250; the shipping policy says most orders ship the next business day. Damaged or defective items may be returned after a Return Merchandise Authorization request within 15 days, while peptides are generally non-returnable.

Company disclosure and rating

Great Northern Peptides publishes an About page, testing information, FAQs, and shipping, return, terms, and privacy policies. It answers support enquiries by email. The site does not publish a street address, legal entity name, or company number. These disclosures support the transparency factor of 9/10; card checkout and the published fulfillment terms support operations at 9/10.

Great Northern Peptides certificates in the COA library ↗Great Northern Peptides testing and quality ↗Great Northern Peptides shipping policy ↗Great Northern Peptides returns policy ↗Great Northern Peptides FAQs ↗Great Northern Peptides contact ↗

Strengths

45 of 47 published certificate images carry an official laboratory record: 41 Freedom Diagnostics PDFs and four Janoshik images from three distinct reports
Freedom Diagnostics reports name Great Northern Peptides as the printed client and print an accession number and search code
Reports state identity, purity, and measured net content, and include a chromatogram and mass confirmation
Janoshik reports resolve on the laboratory's own public verifier for HCG 10,000 IU, HMG 75 IU, and Retatrutide 10mg
Coupon code peptideprices gave 10% off in a normal cart on September 20, 2026
Checkout takes credit card as well as Interac e-Transfer, and card payment works
Publishes shipping, return, terms, privacy, and FAQ pages with a stated next-business-day processing target
Prices are quoted in Canadian dollars for a Canada-only audience, with no US-dollar conversion in the comparison

Watch-outs

One Freedom Diagnostics certificate (AOD-9604 10mg) returns no file from the laboratory's own host, and one further image is a Janoshik sample photograph rather than a report page
Trustpilot removed the exact-domain profile, and the storefront publishes no customer rating or order count
The certificate archive reports identity, purity, and net content but no endotoxin or sterility panel
Ships inside Canada only
Publishes no street address, legal entity name, or company number
Peptides are generally non-returnable, and damaged-item claims require an RMA within 15 days

Details

Ships toCanada

Payment methods

Credit/debit card

Reputation

No PeptidePrices reader reviews yet.

Independent external review aggregate not established yet.

34 in stockShips: CAUpdated yesterday

Products (34)

Peptide	Price	Package	Stock
5-Amino-1MQ	$85.00	50mg	In stock	View
ARA-290 (Cibinetide)	$55.00	10mg	In stock	View
BPC-157	$65.00	10mg	In stock	View
CJC-1295 (With DAC)	$55.00	5mg	In stock	View
CJC-1295 No DAC + Ipamorelin	$65.00	10mg	In stock	View
Cagrilintide	$100.00	10mg	In stock	View
DSIP (Delta Sleep-Inducing Peptide)	$65.00	15mg	In stock	View
Epithalon (Epitalon)	$150.00	50mg	In stock	View
GHK-Cu (Copper Peptide)	$65.00	100mg	In stock	View
GLOW Protocol	$100.00	70mg	In stock	View
Glutathione	$55.00	1500mg	In stock	View
HCG (Human Chorionic Gonadotropin)	$65.00	10000IU	In stock	View
HMG (Human Menopausal Gonadotropin)	$55.00	75IU	In stock	View
IGF-1 LR3	$75.00	1mg	In stock	View
Ipamorelin	$65.00	10mg	In stock	View
KLOW Protocol	$110.00	80mg	In stock	View
KPV	$55.00	10mg	In stock	View
MOTS-c	$120.00	40mg	In stock	View
Melanotan-2 (MT-2)	$50.00	10mg	In stock	View
NAD+	$80.00	1000mg	In stock	View
PT-141 (Bremelanotide)	$55.00	10mg	In stock	View
GLP-3R	$90.00	10mg	In stock	View
GLP-3R	$150.00	20mg	In stock	View
GLP-3R	$225.00	40mg	In stock	View
SS-31 (Elamipretide)	$150.00	50mg	In stock	View
Selank	$55.00	10mg	In stock	View
GLP-1S	$150.00	20mg	In stock	View
Semax	$55.00	10mg	In stock	View
TB-500 (Thymosin Beta-4)	$65.00	10mg	In stock	View
Tesamorelin	$80.00	10mg	In stock	View
Tesamorelin	$140.00	20mg	In stock	View
Thymosin Alpha-1	$65.00	10mg	In stock	View
GLP-2T	$100.00	20mg	In stock	View
GLP-2T	$165.00	40mg	In stock	View

Frequently asked questions

Is Great Northern Peptides legit?: Great Northern Peptides 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.
Does Great Northern Peptides have a coupon code?: Code peptideprices gives customers 10% off. Use the PeptidePrices referral link on this page and confirm the discount at checkout.
Does Great Northern Peptides publish COAs?: COA verified. COA quality 9/10 · 45 of 47 published certificate images carry an official laboratory record
What do customer reviews say about Great Northern Peptides?: PeptidePrices could not verify a mature independent review aggregate for Great Northern Peptides. The evidence summary on this page records what we could and could not verify.
Does Great Northern Peptides publish certificates of analysis?: Yes. The storefront publishes a certificate image on its product pages. PeptidePrices retained 58 gallery images from 47 products and matched 45 of the published certificate images to an official laboratory record: 41 Freedom Diagnostics PDFs, which name Great Northern Peptides as the client and print an accession number and search code, and four Janoshik images from three distinct reports, which resolve on the laboratory's own public verifier. One Freedom Diagnostics certificate prints a code that returns no file, and one further image is a sample photograph rather than a report page.
What is the Great Northern Peptides coupon code?: PeptidePrices verified the code peptideprices for 10% off on September 20, 2026: a CA$90.00 Retatrutide 10mg vial fell to CA$81.00 in a normal cart. Free delivery begins at CA$250.
Where does Great Northern Peptides ship?: Inside Canada only. Canada Post Express Post costs CA$20 flat with delivery in about one to three business days, and shipping is free over CA$250. Most orders ship the next business day.
How can I pay at Great Northern Peptides?: Checkout takes credit card and Interac e-Transfer.
Does Great Northern Peptides accept returns?: Damaged or defective items may be returned if a Return Merchandise Authorization is requested within 15 days of purchase, and returns without an RMA cannot be processed. Peptides are generally non-returnable because of handling and temperature sensitivity.