Peptide Labs Review
Scored 3.72/10 on the published Peptide Source Review formula: lab credibility, shipping, pricing, operating history, and transparency.
- COAs on file
- 4
COAs on file
- Confirmed at the lab
- 4
Confirmed at the lab
- Products
- 19
Products
- Labs
- 1
Labs
3.72/ 10
- Lab credibility and recency55%1.9 (show how this was scored)
- Shipping and refund20%8.0 (show how this was scored)
- Pricing15%5.9 (show how this was scored)
- Operating history5%2.2 (show how this was scored)
- Business transparency5%1.5 (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 Labs legit?
Peptide Labs scores 3.72 out of 10 (Poor, #83 of 100) as of November 2, 2026 and does not meet our testing gate: 4 of the 19 products we score carry a certificate, 4 confirmed with the issuing lab (a lab we grade A-). Its strongest area is shipping and refunds (8.0/10) and its weakest is transparency (1.5/10); its operating history on record covers over a year.
On lab evidence, the heaviest-weighted factor, Peptide Labs has no third-party testing we could independently verify, with COA work on record from Kovera Labs. The testing gate applies because that testing could not be independently verified (Third-party testing not established); its limit for Peptide Labs 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 credibility1.9/10
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-1570.0
No certificate on file for this product: scores 0, counted fully because it is 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.
- GHK-Cu8.0
Certificate from Kovera Labs, tier A- · first seen 2026-09-28
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Kovera Labs)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.679% (99.0% up to but not including 99.7%)
- CJC-12950.0
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.
- Semax0.0
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.
- Melanotan-20.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
- Sermorelin0.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
- Tesamorelin6.5
Certificate from Kovera Labs, tier A- · first seen 2026-09-28
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Kovera Labs)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- −1.5Purity 98.844% (97.0% up to but not including 99.0%)
- Retatrutide8.0
Certificate from Kovera Labs, tier A- · first seen 2026-09-28
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Kovera Labs)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.394% (99.0% up to but not including 99.7%)
- Tirzepatide8.0
Certificate from Kovera Labs, tier A- · first seen 2026-09-28
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Kovera Labs)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.609% (99.0% up to but not including 99.7%)
- 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.
- PT-1410.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
- AOD-96040.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- 5-Amino-1MQ0.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- IGF-1 LR30.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- Hexarelin0.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- Cagrilintide0.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
Weighted mean of 19 products (7 non-core products without a certificate counted at half weight): 30.5 ÷ 15.5 = 1.968.
No adjustments.
1.968 = 1.968, rounded to 0.1: 2.0/10.
Testing gate: 4 of 19 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).
The published lab sub-score is 1.9/10, which differs from this rule result by 0.1. It changes at the next audit.
Shipping and refunds8.0/10
- +1
Returns and refunds
we do not offer refunds or accept returns under any circumstances ... damaged, defective, or incorrect ... arrange for a free replacement
- +2
Lost or damaged parcels
Once the shipment is confirmed as lost by the courier, a replacement order will be issued at no cost to you.
- +1.5
Dispatch time
Orders are processed within 1 business day. Orders placed before 12:00 PM EST are typically shipped same day.
- +1
Tracking on all orders
A tracking number will be emailed once your order ships.
- +1.5
Payment you can dispute
We accept all major credit cards and secure payment options for your convenience.
- +1
Shipping rates published
Free standard shipping on orders over [price].
Total +8: 8.0/10.
Pricing5.9/10
We compared Peptide Labs’s current single-vial prices on 19 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 15% above the market median (ratio 1.15), which the published scale maps to 5.9/10. checked
Operating history2.2/10
Counted from August 13, 2025, the earliest dated evidence of this business operating: 14.3 months as of October 22, 2026, which the published table maps to 2.2/10.
Domain peptidelabs.us registered 2025-08-13 (registry WHOIS, previous pass). Wayback 2024-08-13 shows the domain under an earlier registration parked (script redirect to /lander), so that is not operating history. First Wayback capture of the Peptide Labs store is 2025-12-31 ('Premium Research Peptides', shop menus, '© 2025 ... PeptideLabs.us'). Domain registration kept as the start (fresh registration, store live within 5 months); no entity named on the site, no earlier domain found.
- 2024-08-13 Archived copy: parked lander under a prior registration web.archive.org (opens in new tab)
- 2025-12-31 Archived copy: first capture of the Peptide Labs store web.archive.org (opens in new tab)
- 2025-08-13 Domain registration: registration rdap.org (opens in new tab)
Transparency1.5/10
- 0
Legal entity named
none on about, contact, FAQ, terms, privacy, shipping, returns
- 0
- 0
Phone number
contact page is a form only; footer mailto:[email protected]
- 0
- 0
Dated terms with a governing law
terms page has no date and no governing-law clause
- +1.5
Testing lab named, certificates published
Below you will find the Certificates of Analysis for our current product batch. Each COA is issued by an independent accredited laboratory.
Page text does not name the lab; the laboratory is named on the published reports.
Total +1.5: 1.5/10.
Shop Peptide Labs
- Rated 3.72/10 · Poor
- 4 COAs confirmed at the issuing lab
- Best value: GHK-Cu at $0.80/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 · 3.69to3.72
Market medians updated after the 2 November re-checks pricing 5.7 to 5.9.
- Audit · 3.70to3.69
Market medians updated after Bluum Peptides was added pricing 5.8 to 5.7.
- Audit · 3.65to3.70
Core products recomputed on 29 October 2026 (rule A1b): listings added for newly reviewed vendors made NAD+ a core product in place of CJC-1295, so a missing certificate for each now counts at its new weight: lab 1.8 to 1.9.
Earlier audits (9)
- Audit · 3.66to3.65
Market medians updated after S1Research was added pricing 5.9 to 5.8.
- Audit · 3.71to3.66
Pricing recomputed on 27 October 2026: listings added for a newly reviewed vendor (Peptide Pro) moved the market median for the same products pricing 6.2 to 5.9.
- Audit · 3.66to3.71
Pricing recomputed on 26 October 2026: a vendor was removed from the directory, which moved the market median for the same products: pricing 5.9 to 6.2.
- Audit · 3.69to3.66
Pricing recomputed on 23 October 2026 from current listings with the published rule (section E), after listings added or updated since 22 October, including a newly reviewed vendor's, moved the market median for the same products: pricing 6.1 to 5.9.
- Audit · 3.58to3.69
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 1.6 to 1.8.
- 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: 4 of 19 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 · 3.29to3.58
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 5.5 to 8.0, pricing 7.3 to 6.1, transparency 2.0 to 1.5.
- Audit · 3.50to3.29
Lab 2.0 to 1.6, correcting the 18 October 2026 figure. Four of the 19 products we list carry their own Kovera certificate, confirmed at the laboratory; three score 8 and tesamorelin 6.5 under our rubric, and the other 15 count as zero, which gives 1.6.
- Audit · 3.11to3.50
Re-audit, read through a customer account because the whole catalog is now behind registration. Lab rises from 0 to 2.0 and testing is now counted as third-party: eight Kovera reports from May 2026 were verified at the laboratory, but they cover a small part of a catalog of more than sixty products, and one blend report is presented for standalone BPC-157 and TB-500. Shipping falls from 7.2 to 5.5 (no refunds or returns). Pricing falls from 8.5 to 7.3 on live prices near the market median. Tenure falls from 3.3 to 2.2 (domain registered August 2025). Transparency falls from 4.6 to 2.0: no company or address is published.
Editor’s notes
Peptide Labs publishes eight certificates for a catalog of more than sixty vial products. All eight are genuine Kovera Labs reports from a single round of testing on May 30, 2026, covering a BPC-157 and TB-500 blend, a CJC-1295 and ipamorelin blend, GHK-Cu, MOTS-c, NAD+, retatrutide, tesamorelin and tirzepatide, with identity, purity and measured content but no endotoxin or sterility testing. The certificate table presents the BPC-157 and TB-500 blend report for standalone BPC-157 and TB-500 as well, and a blend certificate does not certify either peptide sold alone. The page describes the reports as coming from an accredited laboratory; Kovera is not accredited. The rest of the catalog, including semaglutide, ipamorelin, sermorelin and the bioregulators, has no certificate. At our 22 October 2026 price check, prices sat about 14% above the market median, with most products shown against a higher struck-through price. The store also sells injection pens, pen needles and pre-mixed vials. The catalog, prices and certificates are visible only after creating an account. There are no returns or refunds; damaged or incorrect items reported within seven days are replaced, and carrier-confirmed lost parcels are reshipped. The site names no company or address, and the domain dates from August 2025.
Peptide Labs 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).
- Purity
- —
- Price per mg
- $10.00$99.99 / 10mgbest of 2 sizes
- Purity
- —
- Price per mg
- $9.00$89.99 / 10mgbest of 2 sizes
Kovera LabsTier A-first seen
- Purity
- 99.679%
- Price per mg
- $0.80$79.99 / 100mgbest of 2 sizes
- Purity
- —
- Price per mg
- $11.60$57.99 / 5mg
- Purity
- —
- Price per mg
- $8.20$81.99 / 10mgbest of 2 sizes
- Purity
- —
- Price per mg
- $4.60$45.99 / 10mg
- Purity
- —
- Price per mg
- $3.90$38.99 / 10mg
- Purity
- —
- Price per mg
- $4.80$47.99 / 10mg
- Purity
- —
- Price per mg
- $7.30$72.99 / 10mg
Kovera LabsTier A-first seen
- Purity
- 98.844%
- Price per mg
- $11.00$109.99 / 10mg
Kovera LabsTier A-first seen
- Purity
- 99.394%
- Price per mg
- $5.25$314.99 / 60mgbest of 6 sizes
Kovera LabsTier A-first seen
- Purity
- 99.609%
- Price per mg
- $4.50$269.99 / 60mgbest of 6 sizes
- Purity
- —
- Price per mg
- $4.67$139.99 / 30mgbest of 3 sizes
- Purity
- —
- Price per mg
- $4.50$44.99 / 10mg
- Purity
- —
- Price per mg
- $8.70$86.99 / 10mgbest of 2 sizes
- Purity
- —
- Price per mg
- $2.70$134.99 / 50mgbest of 2 sizes
- Purity
- —
- Price per mg
- $152.99$152.99 / 1mgbest of 2 sizes
- Purity
- —
- Price per mg
- $9.20$45.99 / 5mg
- Purity
- —
- Price per mg
- $14.60$145.99 / 10mgbest of 2 sizes
Learn more about what Peptide Labs carries
Rated higher than Peptide Labs, with a reader code
Peptide Labs 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 15 of the same products
5.95/10 · Fair · carries 19 of the same products
Peptide Labs: Frequently Asked Questions
Is Peptide Labs legit?
Peptide Labs scores 3.72 out of 10 (Poor, #83 of 100) as of November 2, 2026 and does not meet our testing gate: 4 of the 19 products we score carry a certificate, 4 confirmed with the issuing lab (a lab we grade A-). Its strongest area is shipping and refunds (8.0/10) and its weakest is transparency (1.5/10); its operating history on record covers over a year.
Is there a Peptide Labs promo code, coupon code, or discount code?
We do not have a verified Peptide Labs promo code or coupon code right now. When Peptide Labs 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 Labs discount.
Does Peptide Labs 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: Kovera Labs.
Where can I see Peptide Labs' COAs?
In the "Peptide Labs COAs and lab test results" table on this page. We hold 4 certificates for Peptide Labs, covering 4 of the 19 products we track, issued by Kovera Labs. 4 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 Labs carry?
Peptide Labs carries BPC-157, TB-500, GHK-Cu, CJC-1295, Ipamorelin, Semax, Selank, Melanotan-2, and 11 more. Current per-milligram pricing, COA links, and verification keys for each are in the comparison table on this page.
Is the Peptide Labs 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 Labs3.72Poor
4 confirmed at the lab