Peptide Warehouse Review
Scored 5.01/10 on the published Peptide Source Review formula: lab credibility, shipping, pricing, operating history, and transparency.
- COAs on file
- 8
COAs on file
- Confirmed at the lab
- 8
Confirmed at the lab
- Products
- 22
Products
- Labs
- 1
Labs
5.01/ 10
- Lab credibility and recency55%3.9 (show how this was scored)
- Shipping and refund20%9.5 (show how this was scored)
- Pricing15%5.0 (show how this was scored)
- Operating history5%2.3 (show how this was scored)
- Business transparency5%2.0 (show how this was scored)
Weights are fixed for every vendor. Select a row to see how it was scored.
Testing gate applies (limit 6.50); this score is already below it
Third-party testing not established. The gate records that testing could not be verified; it is not a finding of a quality or safety problem.
Is Peptide Warehouse legit?
Peptide Warehouse scores 5.01 out of 10 (Weak, #71 of 100) as of November 6, 2026 and does not meet our testing gate: 21 of the 22 products we score carry a certificate, 8 confirmed with the issuing lab (a lab we grade A); 13 of those certificates are vendor-issued or from a source whose independence we could not establish. Its strongest area is shipping and refunds (9.5/10) and its weakest is transparency (2.0/10); its operating history on record covers over a year.
On lab evidence, the heaviest-weighted factor, Peptide Warehouse has no third-party testing we could independently verify, with COA work on record from Freedom Diagnostics Testing. The testing gate applies because that testing could not be independently verified (Third-party testing not established); its limit for Peptide Warehouse is 6.50, and this score is already below it. Its lowest price per milligram in our data is on GHK-Cu (see the table below).
How this score was calculated
Every point below follows the published tables in our methodology, with the policy wording we scored and a link to where we read it. Evidence last checked October 22, 2026. Lab credibility is worked product by product from the certificates on file.
Lab credibility3.9/10
Each carried product (lab supplies excluded) is scored from the certificate on file for it, on the published lab rubric: 3 for a published certificate, then points for the laboratory, the verification key, the tests on the certificate and its purity, held to 0 to 10. A certificate that is self-issued, names no laboratory, or comes from a laboratory whose independence is not established scores a flat 2.0; a product with no certificate, a certificate the laboratory’s own record fails, or a posted copy that differs materially from the laboratory’s copy scores 0. Calculated on , the day this page was built; the date each certificate was tested is shown on its row.
- BPC-1578.0
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-09-22
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.62% (99.0% up to but not including 99.7%)
- TB-5002.0
Certificate from an unnamed laboratory (not in our lab directory) · tested 2026-01-27
- 2.0Flat 2.0: no laboratory named on the certificate
- GHK-Cu2.0
Certificate from an unnamed laboratory (not in our lab directory) · tested 2026-01-09
- 2.0Flat 2.0: no laboratory named on the certificate
- CJC-12952.0
Certificate from an unnamed laboratory (not in our lab directory) · tested 2026-01-27
- 2.0Flat 2.0: no laboratory named on the certificate
- Ipamorelin2.0
Certificate from an unnamed laboratory (not in our lab directory) · tested 2026-02-03
- 2.0Flat 2.0: no laboratory named on the certificate
- Semax2.0
Certificate from an unnamed laboratory (not in our lab directory) · tested 2026-03-01
- 2.0Flat 2.0: no laboratory named on the certificate
- Selank2.0
Certificate from an unnamed laboratory (not in our lab directory) · tested 2026-01-27
- 2.0Flat 2.0: no laboratory named on the certificate
- Melanotan-28.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-09-22
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.8% (99.7% or higher)
- Sermorelin2.0
Certificate from an unnamed laboratory (not in our lab directory) · tested 2026-03-01
- 2.0Flat 2.0: no laboratory named on the certificate
- Tesamorelin8.0
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-10-14
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.16% (99.0% up to but not including 99.7%)
- Retatrutide8.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-10-14
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.81% (99.7% or higher)
- Tirzepatide8.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-10-14
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.91% (99.7% or higher)
- Semaglutide8.0
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-10-14
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.57% (99.0% up to but not including 99.7%)
- PT-1412.0
Certificate from an unnamed laboratory (not in our lab directory) · tested 2026-02-20
- 2.0Flat 2.0: no laboratory named on the certificate
- AOD-96042.0
Certificate from an unnamed laboratory (not in our lab directory) · tested 2026-02-03
- 2.0Flat 2.0: no laboratory named on the certificate
- 5-Amino-1MQ2.0
Certificate from an unnamed laboratory (not in our lab directory) · tested 2026-01-27
- 2.0Flat 2.0: no laboratory named on the certificate
- IGF-1 LR38.0
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-10-14
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.61% (99.0% up to but not including 99.7%)
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-09-30
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.62% (99.0% up to but not including 99.7%)
- GHRP-22.0
Certificate from an unnamed laboratory (not in our lab directory) · tested 2026-02-03
- 2.0Flat 2.0: no laboratory named on the certificate
- GHRP-60.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- Hexarelin2.0
Certificate from an unnamed laboratory (not in our lab directory) · tested 2026-03-01
- 2.0Flat 2.0: no laboratory named on the certificate
- Cagrilintide2.0
Certificate from an unnamed laboratory (not in our lab directory) · tested 2026-01-23
- 2.0Flat 2.0: no laboratory named on the certificate
Weighted mean of 22 products (1 non-core product without a certificate counted at half weight): 91.5 ÷ 21.5 = 4.256.
- −0.20LOT Lot numbers that do not identify a single batch (cap −0.2): Lot 7CN-7VK2-6 is printed on both the GLP-3 (R) 10mg (Pept2610140076) and GLP-2 (T) 10mg (Pept2610140075) certificates, two different compounds; confirmed in the lab's own copies
- −0.20CLAIM Claims the certificates do not support (cap −0.3): Site-wide top bar "Backed by COA, HPLC & Endotoxin Testing" while none of the 26 linked certificates shows an endotoxin result (-0.1); /coa-index/ says "Each document reports the analytical methods performed and the results for one specific lot" while the 17 Canva-produced documents carry no lot or batch identifier (-0.1)
4.256 − 0.400 = 3.856, rounded to 0.1: 3.9/10.
Testing gate: 8 of 22 products have a certificate from a directory laboratory (not tier D, not self-issued) with the key confirmed at the laboratory. That is fewer than half, so the testing cap applies (see the methodology).
Shipping and refunds9.5/10
- +3
Returns and refunds
60-Day Satisfaction Guarantee: If you are not satisfied with a product, request a return within 60 days of delivery and we will refund the product price ... Unopened products qualify in full
- +2
Lost or damaged parcels
Once confirmed, we will reship the affected items or refund them. ... We open a trace with the carrier and, once the package is confirmed lost, reship the order or refund it.
- +1.5
Dispatch time
UPS: Paid orders confirmed by 3:00 PM on a business day usually ship the same day
- +1
Tracking on all orders
We email a tracking number to the address used at checkout when the carrier accepts the package, usually within 24 hours.
- +1
Payment you can dispute
Card, Apple Pay, Google Pay: 'Through a secure payment link we email after checkout' ... 'Choose the card option at checkout and place your order. We then email you a secure payment link. The payment page is hosted by our payment provider'
- +1
Shipping rates published
Orders with a product subtotal over [price] get free USPS Priority Mail; Orders with a product subtotal over [price] get free USPS Priority Mail Express
Total +9.5: 9.5/10.
Pricing5.0/10
We compared Peptide Warehouse’s current single-vial prices on 22 products, each matched to the same product and milligrams per vial, with the median price of the other vendors. Its typical price (the median ratio across those products) is 27% above the market median (ratio 1.27), which the published scale maps to 5.0/10. checked
Operating history2.3/10
Counted from August 8, 2025, the earliest dated evidence of this business operating: 14.5 months as of October 22, 2026, which the published table maps to 2.3/10.
Domain peptide-warehouse.com registered 2025-08-08 (RDAP) and never shown parked, for sale or used by another business: it has no captures before its first one (2026-08-12), which is already the store with prices. The site names no entity.
- 2025-08-08 Domain registration: registration; never shown parked or for sale rdap.verisign.com (opens in new tab)
- 2026-08-12 Archived copy: store with prices web.archive.org (opens in new tab)
- 2026-01-26 Certificate: certificate date per our record; lab undisclosed; not counted peptide-warehouse.com (opens in new tab)
Transparency2.0/10
- 0
Legal entity named
No legal entity anywhere (terms, privacy, legal disclaimer, about, contact, brand-clarification); footer 'Copyright 2026 Peptide Warehouse.'
- 0
Business address
No address published; terms notices go to '[email protected]'. addresses.json class none.
- 0
Phone number
No phone; contact page gives only [email protected] and a form
- 0
Named owner or staff
No owner or staff named; about page speaks only of 'Independent Ownership'
- +1
Dated terms with a governing law
'Effective 5 October 2026.' ... 'governed by the laws of the State of Florida and applicable federal law'
- +1.5
Testing lab named, certificates published
'18 research compounds have been tested independently by Freedom Diagnostics, a US analytical laboratory' with search codes for each result
- −0.5
GLP products sold only under code names
GLP products listed as 'GLP-1 (S)', 'GLP-2 (T)', 'GLP-3 (R)'; the product pages never name semaglutide, tirzepatide or retatrutide
Total +2: 2.0/10.
Shop Peptide Warehouse
- Rated 5.01/10 · Weak
- 8 COAs confirmed at the issuing lab
- Best value: GHK-Cu at $0.90/mg
Audit history and why the rating changed
We re-audit vendors against their live COAs and site. Here is what most recently moved this rating, and why.
See the full score history and chart
- Most recent audit · 5.03to5.01
Pricing re-checked on 6 November 2026 after the market medians were recalculated with GhostLabz and NextSelf Labs added pricing 5.1 to 5.0.
- Audit · 5.01to5.03
Pricing re-checked on 5 November 2026 after the market medians were recalculated pricing 5.0 to 5.1.
- Audit · 5.03to5.01
Market medians updated after Pacific Edge Labs was added pricing 5.1 to 5.0.
Earlier audits (9)
- Audit · 5.04to5.03
Market medians updated after Bluum Peptides was added pricing 5.2 to 5.1.
- Audit · 5.06to5.04
Pricing recomputed on 25 October 2026: listings added for a newly reviewed vendor (Pexo Labs) moved the market median for the same products: pricing 5.3 to 5.2.
- Audit · 5.00to5.06
Lab score recalculated on 22 October 2026 under the published core-product rule (A1b): a missing certificate on one of the 15 most widely carried products still counts fully, while on any other product it now counts at half weight, so a broad catalogue is not penalised as much for its breadth. Lab 3.8 to 3.9. Note added 22 October 2026: a score on this entry was corrected from 5.05 to 5.06; it had been rounded down instead of half up.
- Audit · 4.93to5.00
Operating history re-checked on 22 October 2026 under the published rule (earliest dated evidence of the business, including a never-parked store domain and the named operating company, looked up for every vendor): operating history 0.8 to 2.3.
- Audit · Verified, no change
Re-scored on 22 October 2026 under version 2 of our published rules. No score change. The testing gate is now computed from the certificates instead of set by hand: 8 of 22 products have a certificate from a directory laboratory with the key confirmed at the laboratory, fewer than the half required, so the testing cap applies; the cap sits above the weighted score, so it does not lower it.
- Audit · 4.86to4.93
Every listed product read and its certificate confirmed at the issuing laboratory on 22 October 2026 (the site was previously unreadable to our tools), so the lab score now follows our published lab rule. Lab 3.7 to 3.8. Note added 22 October 2026: a score on this entry was corrected from 4.92 to 4.93; it had been rounded down instead of half up.
- Audit · 4.94to4.86
Re-scored on 22 October 2026 under our published rubric for shipping, pricing, operating history and transparency, applied to every vendor the same day: prices re-read from the vendor's site and matched by milligrams per vial, operating history from the earliest dated evidence of the business, and policies scored item by item. shipping and refunds 9.0 to 9.5, transparency 5.5 to 2.0.
- Audit · 5.48to4.94
Re-scored on 22 October 2026 under our published rubric for shipping, pricing, operating history and transparency, applied to every vendor the same day: prices re-read from the vendor's site and matched by milligrams per vial, operating history from the earliest dated evidence of the business, and policies scored item by item. pricing 8.5 to 5.3, operating history 2.0 to 0.8.
- Audit · 5.50to5.48
Full-site re-audit prompted by a vendor accuracy dispute. Corrected a factual error: a prior note claimed 'multiple BBB complaints' against peptide-warehouse.com, but the domain has no BBB profile, so the claim was removed. Also found the site advertises '5-Star Trustpilot' while its actual Trustpilot is ~4.0/5 across ~23 reviews, so transparency was trimmed. Testing remains unverified (no named lab, no accreditation, placeholder sample COA).
Editor’s notes
Re-audited 2026-08-09 (full-site crawl). peptide-warehouse.com (hyphenated) is a NEW, separate entity (domain registered 2025-08-08) and, via a dedicated brand-clarification page, explicitly disclaims affiliation with peptideswarehouse.com / peptidewarehouse.ca. At the 9 August 2026 check, the site advertised independent third-party HPLC and mass-spectrometry testing with endotoxin, heavy-metal, residual-solvent and moisture screens and batch-specific COAs across 54 compounds, but named no third-party laboratory, cited no ISO/IEC 17025 accreditation, offered no independent verification portal and showed a placeholder template as its COA-index sample, so third-party testing could not be verified at that time. At our 22 October 2026 check, 13 of the 22 products we list linked a product-specific certificate on the vendor's own template, reporting HPLC purity, that names no testing laboratory, and one linked no certificate. On 22 October 2026 the site stated that 18 compounds had been tested by Freedom Diagnostics and gave a search code for each result; for 8 of the 22 products we list, the certificate we score is a Freedom Diagnostics report that we confirmed at the laboratory on 22 October 2026. In October 2026 prices ran about 23% above the market median. Shipping strong: when we checked on 22 October 2026, paid orders confirmed by 3 PM on a business day usually shipped the same day, with free Priority or Priority Express above order minimums and US-only fulfillment. Returns above average: at the August 2026 check, a 14-day unopened window plus a 60-day satisfaction guarantee covering up to two opened vials (customer pays return shipping, 48h damage-report window, RMA required); on 22 October 2026 the policy described a 60-day satisfaction guarantee refunding the product price, with unopened products qualifying in full, and reshipment or refund of a parcel confirmed lost. Transparency limited: anonymous ownership (WHOIS privacy), no physical address or founding year disclosed, and the site advertises '5-Star Rated on Trustpilot' while the actual Trustpilot rating, when we checked on 2026-08-09, was ~4.0/5 across ~23 reviews. At the August check, payments included Zelle and crypto, which a buyer cannot reverse; on 22 October 2026 the site also offered card, Apple Pay and Google Pay through a payment link emailed after checkout. CORRECTION (2026-08-09): a prior note stated 'multiple BBB complaints' against this vendor, peptide-warehouse.com has NO BBB profile, so that characterization was inaccurate and has been removed. Unverified non-delivery / slow-tracking reports do exist on review sites, but they carry real conflation risk with the similarly-named domains and are not independently confirmed. No FDA warning letter located against peptide-warehouse.com specifically.
Peptide Warehouse COAs and lab test results
One row per product: the certificate on file and how the lab rule reads it, the laboratory that issued it and its tier, the date it was tested, the purity it reports, and the lowest price per milligram we recorded (per IU or mL where a product is sold that way).
Freedom Diagnostics TestingTier Atested
- Purity
- 99.62%
- Price per mg
- $5.50$109.99 / 20mgbest of 3 sizes
Third-party lab (undisclosed)tested
- Purity
- —
- Price per mg
- $8.50$84.99 / 10mgbest of 2 sizes
Third-party lab (undisclosed)tested
- Purity
- —
- Price per mg
- $0.90$89.99 / 100mgbest of 2 sizes
Third-party lab (undisclosed)tested
- Purity
- —
- Price per mg
- $8.50$84.99 / 10mgbest of 2 sizes
Third-party lab (undisclosed)tested
- Purity
- —
- Price per mg
- $7.70$76.99 / 10mg
Third-party lab (undisclosed)tested
- Purity
- —
- Price per mg
- $6.00$59.99 / 10mgbest of 2 sizes
Third-party lab (undisclosed)tested
- Purity
- —
- Price per mg
- $6.00$59.99 / 10mgbest of 2 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.8%
- Price per mg
- $4.40$43.99 / 10mg
Third-party lab (undisclosed)tested
- Purity
- —
- Price per mg
- $8.80$87.99 / 10mg
Freedom Diagnostics TestingTier Atested
- Purity
- 99.16%
- Price per mg
- $9.50$94.99 / 10mgbest of 2 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.81%
- Price per mg
- $10.00$599.99 / 60mgbest of 6 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.91%
- Price per mg
- $7.50$449.99 / 60mgbest of 4 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.57%
- Price per mg
- $10.00$199.99 / 20mgbest of 3 sizes
Third-party lab (undisclosed)tested
- Purity
- —
- Price per mg
- $4.40$43.99 / 10mg
Third-party lab (undisclosed)tested
- Purity
- —
- Price per mg
- $8.00$79.99 / 10mgbest of 2 sizes
Third-party lab (undisclosed)tested
- Purity
- —
- Price per mg
- $4.00$199.99 / 50mgbest of 3 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.61%
- Price per mg
- $104.99$104.99 / 1mg
Freedom Diagnostics TestingTier Atested
- Purity
- 99.62%
- Price per mg
- $8.00$39.99 / 5mg
Third-party lab (undisclosed)tested
- Purity
- —
- Price per mg
- $7.20$35.99 / 5mg
- Purity
- —
- Price per mg
- $7.20$35.99 / 5mg
Third-party lab (undisclosed)tested
- Purity
- —
- Price per mg
- $9.00$44.99 / 5mg
Third-party lab (undisclosed)tested
- Purity
- —
- Price per mg
- $18.00$179.99 / 10mgbest of 2 sizes
Learn more about what Peptide Warehouse carries
Rated higher than Peptide Warehouse, with a reader code
Peptide Warehouse is not one of our affiliate partners, so we have no code for it. These partners score above it under the same published rules, pass our testing gate, and give readers a discount.
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
7.09/10 · Strong · carries 16 of the same products
6.08/10 · Fair · carries 16 of the same products
5.95/10 · Fair · carries 21 of the same products
Peptide Warehouse: Frequently Asked Questions
Is Peptide Warehouse legit?
Peptide Warehouse scores 5.01 out of 10 (Weak, #71 of 100) as of November 6, 2026 and does not meet our testing gate: 21 of the 22 products we score carry a certificate, 8 confirmed with the issuing lab (a lab we grade A); 13 of those certificates are vendor-issued or from a source whose independence we could not establish. Its strongest area is shipping and refunds (9.5/10) and its weakest is transparency (2.0/10); its operating history on record covers over a year.
Is there a Peptide Warehouse promo code, coupon code, or discount code?
We do not have a verified Peptide Warehouse promo code or coupon code right now. When Peptide Warehouse runs a sale or issues a discount code, we post it here and on our promos page, so bookmark this page for the latest Peptide Warehouse discount.
Does Peptide Warehouse use third-party lab testing?
Not to our verification standard. Fewer than half of this vendor's scored products have a certificate from an independent laboratory in our directory (not tier D) whose verification key we confirmed at that laboratory, so the testing gate applies. This records what we could verify; it is not a finding of a quality or safety problem. Laboratories on the certificates we hold: Freedom Diagnostics Testing.
Where can I see Peptide Warehouse's COAs?
In the "Peptide Warehouse COAs and lab test results" table on this page. We hold 8 certificates for Peptide Warehouse, covering 8 of the 22 products we track, issued by Freedom Diagnostics Testing. 8 products' certificates were confirmed at the issuing laboratory itself. Each row links the certificate, its lab, its test date and the purity it reports.
What peptides does Peptide Warehouse carry?
Peptide Warehouse carries BPC-157, TB-500, GHK-Cu, CJC-1295, Ipamorelin, Semax, Selank, Melanotan-2, and 14 more. Current per-milligram pricing, COA links, and verification keys for each are in the comparison table on this page.
Is the Peptide Warehouse review on Peptide Source Review affected by affiliate status?
No. All affiliate relationships are publicly disclosed and never change a vendor's score, rank, or gate status. Our scoring formula is published in full and applied identically to every vendor.
Want to understand how this score was built?
Read the full methodology or the editorial integrity policy.
Peptide Warehouse5.01Weak
8 confirmed at the lab