Independent vendor review · 2026

Peptide Warehouse US Review

Scored 2.46/10 on the published Peptide Source Review formula: lab credibility, shipping, pricing, operating history, and transparency.

Reviewed by the Peptide Source Review teamLast audited How we rate

COAs on file
0

COAs on file

Confirmed at the lab
0

Confirmed at the lab

Products
25

Products

Labs
0

Labs

2.46/ 10

Poor

Last scored

Testing gate applies (limit 6.50)

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 US legit?

Peptide Warehouse US scores 2.46 out of 10 (Poor, #95 of 100) as of November 1, 2026 and does not meet our testing gate: none of the 24 products we score carries a certificate. Its strongest area is pricing (8.2/10) and its weakest is lab testing (0.0/10); its operating history on record covers less than a month.

On lab evidence, the heaviest-weighted factor, Peptide Warehouse US has no third-party testing we could independently verify. The testing gate applies because that testing could not be independently verified (Third-party testing not established); its limit for Peptide Warehouse US is 6.50, and this score is already below it. Its lowest price per milligram in our data is on Glutathione (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 25, 2026. Lab credibility is worked product by product from the certificates on file.

Lab credibility0.0/10

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-1570.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

  • BPC-157 + TB-5000.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

  • CJC-1295 + Ipamorelin0.0

    No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.

  • GHK-Cu0.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

  • GLOW0.0

    No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.

  • Glutathione0.0

    No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.

  • HCG0.0

    No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.

  • Ipamorelin0.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

  • Kisspeptin-100.0

    No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.

  • KLOW0.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

  • KPV0.0

    No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.

  • MOTS-c0.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

  • Melanotan-20.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

  • NAD+0.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

  • Pinealon0.0

    No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.

  • PT-1410.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

  • Retatrutide0.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

  • Selank0.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

  • Semaglutide0.0

    No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.

  • Semax0.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

  • SS-310.0

    No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.

  • TB-5000.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

  • Tesamorelin0.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

  • Tirzepatide0.0

    No certificate on file for this product: scores 0, counted fully because it is one of the core products.

Weighted mean of 24 products (9 non-core products without a certificate counted at half weight): 0.0 ÷ 19.5 = 0.000.

No adjustments.

0.000 = 0.000, rounded to 0.1: 0.0/10.

Testing gate: 0 of 24 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 refunds6.0/10
  • +1

    Returns and refunds

    "The sale is final. Peptide Warehouse does not refund a payment. A pack that arrives damaged, short, or different from the pack ordered is replaced by a reshipment."

    Only damaged, short or wrong packs are put right, by reshipment (rule B1: 1).

    peptide-warehouse.us (opens in new tab) source 2 (opens in new tab) source 3 (opens in new tab)checked

  • +1

    Lost or damaged parcels

    "A replacement is reshipped when the delivered order is damaged, short, or is not the pack that was ordered." "If the carrier marks the shipment delivered, a replacement is not sent for a claim that it was not received."

    A free reship is stated for damage; nothing is stated for a parcel lost in transit (rule B2: one of them, 1).

    peptide-warehouse.us (opens in new tab)checked

  • +1.5

    Dispatch time

    "An order placed by 3:00 p.m. Eastern Time, Monday through Saturday, is handled the same day."

    peptide-warehouse.us (opens in new tab)checked

  • 0

    Tracking on all orders

    no statement that tracking is provided on the shipping, returns, terms, FAQ, contact or product pages

    peptide-warehouse.us (opens in new tab)checked

  • +1.5

    Payment you can dispute

    "You pay by credit card at checkout. Net terms are not offered."

    The checkout needs JavaScript and was not used; scored from the policy pages (rule B5).

    peptide-warehouse.us (opens in new tab) source 2 (opens in new tab)checked

  • +1

    Shipping rates published

    "UPS Overnight is [price] to [price]. The checkout shows the method and the exact cost."

    A published rate for one service, shown on the site (rule B6).

    peptide-warehouse.us (opens in new tab)checked

Total +6: 6.0/10.

Pricing8.2/10

We compared Peptide Warehouse US’s current per-vial prices on 24 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 17% below the market median (ratio 0.83), which the published scale maps to 8.2/10. Peptide Warehouse US sells these sizes only as packs of several vials, so each pack price at the minimum order is divided by all the milligrams in the pack; discounts for buying more than one pack are not counted (rule E2). checked

Operating history0.6/10

Counted from October 2, 2026, the earliest dated evidence of this business operating: 0.8 months as of October 25, 2026, which the published table maps to 0.6/10.

Domain peptide-warehouse.us registered 2026-10-02 00:24 UTC (rdap.nic.us, Porkbun; 2026-10-01 Pacific). The only archived capture, 2026-10-03, is the registrar's 'Coming Soon' page for a newly registered domain, not a store. No operating company is named, no certificate has been issued to the vendor and no dated customer review was found. The domain date is used.

Transparency0.0/10

Total 0: 0.0/10.

  • Pricing: every product is sold only as a 10-vial pack, with a minimum order of one box. Each size is priced at the one-pack price divided by 10 vials x the size (rule E2). The 5%, 8% and 12% discounts at 3, 5 and 10 or more boxes need more than the minimum order and are not counted, nor is a 5% first-order discount for confirming an email.
  • Transparency: retatrutide, tirzepatide and semaglutide are listed in the catalogue as 'Reta', 'Tirz' and 'Sema (GLP-1)', but each product page is titled with and describes the compound, so rule C9 does not apply.
  • Shipping: the returns page states that a parcel the carrier marks delivered is not replaced; no rule scores this beyond B2.
Third-party tested: NoProducts tracked: 25

Shop Peptide Warehouse US

  • Rated 2.46/10 · Poor
  • Best value: Glutathione at $0.07/mg
Visit Peptide Warehouse US → (opens in new tab)

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

  1. Most recent audit · 2.45to2.46

    Market medians updated after Bluum Peptides was added pricing 8.1 to 8.2.

  2. Audit · 2.46to2.45

    Pricing recomputed on 26 October 2026: listings added for a newly reviewed vendor (StudzPeptides) moved the market median for the same products: pricing 8.2 to 8.1.

  3. Audit · 2.51to2.46

    Pricing recomputed on 26 October 2026: listings added for a newly reviewed vendor (Lotus Peptide) moved the market median for the same products: pricing 8.5 to 8.2.

  4. Audit · Initial audit

    lab 0.0 / shipping 6.0 / pricing 8.5 / tenure 0.6 / transparency 0.0. First audit after the vendor's submission. The site published no certificates of analysis, so the lab score is 0 and testing could not be independently verified. Every product is sold only as a 10-vial pack; prices are compared per vial at the one-pack price (rule E2).

Editor’s notes

Peptide Warehouse US sells research peptides to US addresses from peptide-warehouse.us, which calls itself Peptide Warehouse. It is not the vendor we list as Peptide Warehouse at peptide-warehouse.com: that site states, on a brand-clarification page we read on 25 October 2026, that peptide-warehouse.com is the only domain it operates. Every product is sold only as a 10-vial pack, with a minimum order of one box, paid by credit card at checkout. Prices on this page are for one pack, and our price comparison divides each pack price by its 10 vials; the discounts of 5%, 8% and 12% at 3, 5 and 10 or more boxes are not counted, because they need more than the minimum order. These pack prices are compared with the market, but they are not included in the market medians used for other vendors. The store's checkout backend, as we observed it on 25 October 2026, also lists 1-vial and 5-vial variations of the same products; the storefront offers only the 10-vial pack, so they are not counted as purchasable. On that basis its prices on 25 October 2026 sat about 15% below the market median across 24 products. On 25 October 2026 the site published no certificates of analysis: its COA library stated that no certificates were published yet, and no product page linked a certificate or named a testing laboratory, so the lab score is 0 and testing could not be verified. Orders placed by 3 PM Eastern, Monday to Saturday, are handled the same day and ship by UPS or USPS, with an overnight rate published. The sale is final: refunds are not offered, a damaged, short or wrong pack is reshipped, and a parcel the carrier marks delivered is not replaced. The site names no company, address, phone number or person, and its terms are undated. The domain was registered on 2 October 2026.

Peptide Warehouse US 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).

BPC-157No public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$4.40$440.00 / 10 x 10mg packbest of 2 sizes
BPC-157 + TB-500No public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$4.90$490.00 / 10 x 10mg pack
CJC-1295 + IpamorelinNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$6.00$600.00 / 10 x 10mg pack
GHK-CuNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$0.37$370.00 / 10 x 100mg packbest of 2 sizes
GLOWNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$1.11$780.00 / 10 x 70mg pack
GlutathioneNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$0.07$400.00 / 10 x 600mg pack
HCGNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per IU
$0.01$560.00 / 10 x 5000 IU pack
IpamorelinNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$5.20$520.00 / 10 x 10mg pack
Kisspeptin-10No public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$7.40$370.00 / 10 x 5mg pack
KLOWNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$1.19$950.00 / 10 x 80mg pack
KPVNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$4.40$440.00 / 10 x 10mg pack
MOTS-cNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$1.93$770.00 / 10 x 40mg packbest of 2 sizes
Melanotan-2No public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$4.00$400.00 / 10 x 10mg pack
NAD+No public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$0.09$470.00 / 10 x 500mg pack
PinealonNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$4.50$450.00 / 10 x 10mg pack
PT-141No public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$4.20$420.00 / 10 x 10mg pack
RetatrutideNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$2.50$750.00 / 10 x 30mg packbest of 5 sizes
SelankNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$4.00$400.00 / 10 x 10mg pack
SemaglutideNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$2.47$370.00 / 10 x 15mg pack
SemaxNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$4.40$440.00 / 10 x 10mg pack
SS-31No public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$4.90$490.00 / 10 x 10mg pack
TB-500No public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$5.60$560.00 / 10 x 10mg packbest of 2 sizes
TesamorelinNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$7.00$700.00 / 10 x 10mg packbest of 2 sizes
TirzepatideNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mg
$1.50$450.00 / 10 x 30mg packbest of 3 sizes
Bacteriostatic WaterNo public COANo third-party COA was publicly available at audit time
Purity
—
Price per mL
$1.40$140.00 / 10 x 10 mL packbest of 2 sizes

Learn more about what Peptide Warehouse US carries

Learn about BPC-157 →Learn about GHK-Cu →Learn about Ipamorelin →Learn about Retatrutide →

Rated higher than Peptide Warehouse US, with a reader code

Peptide Warehouse US 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.

LabFirst Peptides

7.73/10 · Strong · carries 20 of the same products

Shop LabFirst Peptides → (opens in new tab)Read the review
Arctic Lab Supply

6.98/10 · Fair · carries 21 of the same products

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NextGen Peps

5.95/10 · Fair · carries 23 of the same products

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Peptide Warehouse US: Frequently Asked Questions

Is Peptide Warehouse US legit?

Peptide Warehouse US scores 2.46 out of 10 (Poor, #95 of 100) as of November 1, 2026 and does not meet our testing gate: none of the 24 products we score carries a certificate. Its strongest area is pricing (8.2/10) and its weakest is lab testing (0.0/10); its operating history on record covers less than a month.

Is there a Peptide Warehouse US promo code, coupon code, or discount code?

We do not have a verified Peptide Warehouse US promo code or coupon code right now. When Peptide Warehouse US 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 US discount.

Does Peptide Warehouse US 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.

Where can I see Peptide Warehouse US' COAs?

We have no Peptide Warehouse US certificate of analysis on file that we could verify at audit time for any of the 25 products we track. The "Peptide Warehouse US COAs and lab test results" table on this page shows the status of each product, and it updates when Peptide Warehouse US publishes a certificate we can check.

What peptides does Peptide Warehouse US carry?

Peptide Warehouse US carries BPC-157, BPC-157 + TB-500, CJC-1295 + Ipamorelin, GHK-Cu, GLOW, Glutathione, HCG, Ipamorelin, and 17 more. Current per-milligram pricing, COA links, and verification keys for each are in the comparison table on this page.

Is the Peptide Warehouse US 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.

Visit Peptide Warehouse US → (opens in new tab)

Peptide Warehouse US2.46Poor

Visit Peptide Warehouse US (opens in new tab)

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