Pexo Labs Review
Scored 3.63/10 on the published Peptide Source Review formula: lab credibility, shipping, pricing, operating history, and transparency.
- COAs on file
- 0
COAs on file
- Confirmed at the lab
- 0
Confirmed at the lab
- Products
- 20
Products
- Labs
- 1
Labs
3.63/ 10
- Lab credibility and recency55%1.5 (show how this was scored)
- Shipping and refund20%6.0 (show how this was scored)
- Pricing15%8.7 (show how this was scored)
- Operating history5%0.9 (show how this was scored)
- Business transparency5%5.0 (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 Pexo Labs legit?
Pexo Labs scores 3.63 out of 10 (Poor, #85 of 100) as of November 1, 2026 and does not meet our testing gate: 14 of the 19 products we score carry a certificate, none confirmed with the issuing lab; those certificates are vendor-issued or from a source whose independence we could not establish. Its strongest area is pricing (8.7/10); its weakest is operating history (0.9/10), with about three months of records.
On lab evidence, the heaviest-weighted factor, Pexo Labs has no third-party testing we could independently verify. Certificates naming Amino Metrics, a laboratory whose independence we could not establish, score a flat 2.0 each. The testing gate applies because that testing could not be independently verified (Third-party testing not established); its limit for Pexo Labs 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 credibility1.5/10
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.
- 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.
- 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.
- 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.
- Semax0.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- Retatrutide2.0
Certificate from Amino Metrics, tier D · tested 2026-08-30
- 2.0Flat 2.0: Amino Metrics tier D: independence not established
- Tirzepatide2.0
Certificate from Amino Metrics, tier D · tested 2026-09-14
- 2.0Flat 2.0: Amino Metrics tier D: independence not established
- Tesamorelin2.0
Certificate from Amino Metrics, tier D · tested 2026-08-31
- 2.0Flat 2.0: Amino Metrics tier D: independence not established
- GHK-Cu2.0
Certificate from Amino Metrics, tier D · tested 2026-09-01
- 2.0Flat 2.0: Amino Metrics tier D: independence not established
- MOTS-c2.0
Certificate from Amino Metrics, tier D · tested 2026-08-30
- 2.0Flat 2.0: Amino Metrics tier D: independence not established
- BPC-1572.0
Certificate from Amino Metrics, tier D · tested 2026-08-30
- 2.0Flat 2.0: Amino Metrics tier D: independence not established
Certificate from Amino Metrics, tier D · tested 2026-08-31
- 2.0Flat 2.0: Amino Metrics tier D: independence not established
- Ipamorelin2.0
Certificate from Amino Metrics, tier D · tested 2026-08-30
- 2.0Flat 2.0: Amino Metrics tier D: independence not established
- NAD+2.0
Certificate from Amino Metrics, tier D · tested 2026-09-14
- 2.0Flat 2.0: Amino Metrics tier D: independence not established
- SS-312.0
Certificate from Amino Metrics, tier D · tested 2026-08-31
- 2.0Flat 2.0: Amino Metrics tier D: independence not established
- KPV2.0
Certificate from Amino Metrics, tier D · tested 2026-08-31
- 2.0Flat 2.0: Amino Metrics tier D: independence not established
- TB-5002.0
Certificate from Amino Metrics, tier D · tested 2026-08-31
- 2.0Flat 2.0: Amino Metrics tier D: independence not established
- KLOW2.0
Certificate from Amino Metrics, tier D · tested 2026-08-30
- 2.0Flat 2.0: Amino Metrics tier D: independence not established
Certificate from Amino Metrics, tier D · tested 2026-08-30
- 2.0Flat 2.0: Amino Metrics tier D: independence not established
Weighted mean of 19 products (4 non-core products without a certificate counted at half weight): 28.0 ÷ 17.0 = 1.647.
- −0.10CLAIM Claims the certificates do not support (cap −0.3): the CJC-1295 + Ipamorelin and KLOW product descriptions say the certificate reports purity for each component separately, while the Amino Metrics certificates AM-2608-0298 and AM-2609-0300 each report one combined purity figure
1.647 − 0.100 = 1.547, rounded to 0.1: 1.5/10.
Testing gate: 0 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).
Shipping and refunds6.0/10
- +1
Returns and refunds
"All orders placed through pexolabs.com are considered final." Damaged, defective or incorrect orders reported within 7 days: "A full refund to your original payment method", store credit or "A replacement product shipped to you at no additional cost"
- +1
Lost or damaged parcels
"For a small additional fee at checkout, you may add shipping protection"; "Orders placed without shipping protection are shipped at the buyer's risk."
Loss and in-transit damage are covered only through a paid protection add-on (rule B2: 1).
- +1.5
Dispatch time
"Orders placed before 3:00 PM Eastern Standard Time (EST) on a business day will be shipped that same day."
The same section also says orders are processed within 1 to 2 business days; both statements are within 2 business days, so B3 scores 1.5 either way and no contradiction is taken for this pair.
- +1
Tracking on all orders
"A tracking number is provided via email once your order has shipped."
- +1.5
Payment you can dispute
Terms section 12: "We accept credit and debit cards, ACH and electronic check, Zelle, and cryptocurrency." Store API payment methods: stripe, beacon_checkout, zelle, nowpayments, bacs
pexolabs.com (opens in new tab) source 2 (opens in new tab)checked
- 0
Shipping rates published
"Shipping is charged at a flat rate based on the shipping method selected at checkout. Free shipping is available on qualifying orders as indicated on our website."
No rate or free-shipping threshold is stated on the shipping, returns, terms, about, contact or COA pages; the home and product pages sit behind the site's age gate and were read through the public Store API, whose product data states no rate either.
Total +6: 6.0/10.
Pricing8.7/10
We compared Pexo 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 24% below the market median (ratio 0.76), which the published scale maps to 8.7/10. checked
Operating history0.9/10
Counted from July 27, 2026, the earliest dated evidence of this business operating: 3.2 months as of October 25, 2026, which the published table maps to 0.9/10.
Pexo Labs LLC, the operating company named in the terms, was filed with the New York Department of State on 2026-07-27 (DOS ID 7976459, Erie County). The domain pexolabs.com was registered on 2026-07-19 (Verisign RDAP), but no archived capture shows a store before the filing (Wayback CDX empty on 2026-11-01), and under the house rule of 27 October 2026 a domain registration with no archived capture showing a store is not counted (as for Hacker Peptides, NovaForge Labs and StudzPeptides). Earliest certificate issued to the vendor: sample received 2026-08-28. Start date revised on 2026-11-01 from the domain date of 2026-07-19 to the filing date; the sub-score is 0.9 under either date.
- 2026-07-27 State registry: New York Department of State: PEXO LABS LLC, domestic LLC, initial filing 2026-07-27, Erie County (re-read 2026-11-01) data.ny.gov (opens in new tab)
- 2026-07-19 Domain registration: registration; no archived capture showing a store (Wayback CDX empty on 2026-11-01); not counted under the house rule of 27 October 2026 rdap.verisign.com (opens in new tab)
- 2026-08-28 certificate: Amino Metrics certificates for PEXO LABS LLC, earliest sample received 2026-08-28 aminometrics.com (opens in new tab)
Transparency5.0/10
- +2
Legal entity named
"Pexo Labs LLC, a New York limited liability company located at 505 Ellicott Street, Buffalo, New York 14203"
New York Department of State: PEXO LABS LLC, DOS ID 7976459, filed 2026-07-27, Erie County.
- +1
Business address
505 Ellicott St., Buffalo, NY 14203 (footer and terms; no suite)
Address checked: 505 Ellicott Street is HANSA Workspace, a coworking centre that advertises a virtual mailbox at that address; virtual office (rule C3: 1).
- 0
Phone number
no phone number shown; contact is [email protected] and a form
- 0
- +1
Dated terms with a governing law
"Effective Date: August 1, 2026"; "governed by and construed in accordance with the laws of the State of New York"
- +1.5
Testing lab named, certificates published
"Every batch we sell is independently tested by Amino Metrics"; 15 certificates published
- −0.5
GLP products sold only under code names
tirzepatide sold as "PL-2 (TR)" and retatrutide as "PL-3 (RT)"; neither page's name, description or specification fields name the compound
pexolabs.com (opens in new tab) source 2 (opens in new tab)checked
Total +5: 5.0/10.
- Pricing: every product was also shown at 30% off in a 'Halloween sale' (site banner, end time 1 November 2026); an event-tied, dated sale is not counted at a first review (rule E), so the regular prices are used. Paid memberships (Gold, Platinum, Diamond; 5, 7 or 10% member pricing) need a paid subscription and are not counted. Re-read from the public Store API on 1 November 2026: every regular price for all 25 sizes matched the prices stored on 25 October 2026, and the Halloween sale banner (data-end 1793595540, 1 November 2026 23:59 Eastern) was still shown at 30% off that day; it remains uncounted.
- Shipping: the terms list Platinum membership as including free 3-day shipping while the Platinum product description says free 2-day shipping; the terms state that the membership page controls in a conflict, and the difference concerns a paid membership benefit, not recourse, so no contradiction deduction is taken.
- Transparency: PL-31 (SS-31) and PL-Tesa (tesamorelin) are also code names, but they are not GLP products, so rule C9 does not apply to them.
- Operating history: revised on 1 November 2026 to start from the New York filing of Pexo Labs LLC on 2026-07-27 rather than the domain registration of 2026-07-19, because no archived capture shows a store before the filing (house rule of 27 October 2026); the sub-score stays at 0.9.
Shop Pexo Labs
- Rated 3.63/10 · Poor
- Best value: Glutathione at $0.04/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 · 3.61to3.63
Market medians updated after Bluum Peptides was added pricing 8.6 to 8.7.
- Audit · 3.63to3.61
Pricing recomputed on 26 October 2026: listings added for a newly reviewed vendor (StudzPeptides) moved the market median for the same products: pricing 8.7 to 8.6.
- Audit · Initial audit
lab 1.5 / shipping 6.0 / pricing 8.7 / tenure 0.9 / transparency 5.0. First audit after the vendor's submission. All fifteen certificates are on file with the issuing laboratory, Amino Metrics, but we could not establish that laboratory as an identifiable business, so its certificates count for the flat 2.0 and testing could not be independently verified; five of the 19 peptide products we list had no certificate.
Editor’s notes
Pexo Labs sells research peptides to US addresses from pexolabs.com and is operated by Pexo Labs LLC, a New York company formed in July 2026. Its certificate page names one laboratory, Amino Metrics, and on 25 October 2026 it published fifteen certificates, covering 14 of the 19 peptide products we list. Every one is on file in Amino Metrics' own lookup under Pexo Labs LLC, and the copies Pexo posts match the laboratory's. The certificates report purity between 99.13% and 99.91% by HPLC and the measured content of each vial; identity rests on retention time against a reference standard, which the certificates themselves say is not proof of identity, and none includes an endotoxin or sterility test. We could not establish Amino Metrics as an identifiable laboratory: its site names no company, street address or staff, its domain was registered in July 2026, and every report we found from it was issued to Pexo Labs. Under our rules its certificates count for the flat 2.0, and testing could not be independently verified. Two blend pages say the certificate reports each component's purity separately, while the certificates give one combined figure. Glutathione, IGF-1 LR3, GLOW, kisspeptin and Semax had no certificate. Orders placed before 3 PM Eastern ship the same business day with tracking, and checkout takes cards. All sales are final; damaged, defective or wrong items reported within 7 days are refunded, replaced or credited, while lost or damaged parcels are covered only with paid shipping protection. The address given is a coworking building that offers virtual mailboxes, no phone number or owner is named, and tirzepatide and retatrutide are sold under the code names PL-2 (TR) and PL-3 (RT). Its regular prices on 25 October 2026 sat about 24% below the market median across 19 products; a 30% Halloween sale running that day is not counted.
Pexo 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
- $0.04$56.99 / 1500mg
- Purity
- —
- Price per mg
- $65.99$65.99 / 1mg
- Purity
- —
- Price per mg
- $1.21$84.99 / 70mg
- Purity
- —
- Price per mg
- $2.80$27.99 / 10mg
- Purity
- —
- Price per mg
- $4.70$46.99 / 10mg
Amino MetricsTier Dtested
- Purity
- —
- Price per mg
- $5.50$164.99 / 30mgbest of 3 sizes
Amino MetricsTier Dtested
- Purity
- —
- Price per mg
- $2.50$74.99 / 30mgbest of 2 sizes
Amino MetricsTier Dtested
- Purity
- —
- Price per mg
- $6.60$65.99 / 10mg
Amino MetricsTier Dtested
- Purity
- —
- Price per mg
- $0.50$49.99 / 100mgbest of 2 sizes
Amino MetricsTier Dtested
- Purity
- —
- Price per mg
- $3.20$127.99 / 40mgbest of 2 sizes
Amino MetricsTier Dtested
- Purity
- —
- Price per mg
- $3.80$37.99 / 10mg
Amino MetricsTier Dtested
- Purity
- —
- Price per mg
- $5.70$56.99 / 10mg
Amino MetricsTier Dtested
- Purity
- —
- Price per mg
- $4.70$46.99 / 10mg
Amino MetricsTier Dtested
- Purity
- —
- Price per mg
- $0.12$59.99 / 500mg
Amino MetricsTier Dtested
- Purity
- —
- Price per mg
- $4.50$44.99 / 10mg
Amino MetricsTier Dtested
- Purity
- —
- Price per mg
- $3.80$37.99 / 10mg
Amino MetricsTier Dtested
- Purity
- —
- Price per mg
- $3.80$37.99 / 10mg
Amino MetricsTier Dtested
- Purity
- —
- Price per mL
- $0.93$27.99 / 30 mLbest of 2 sizes
Amino MetricsTier Dtested
- Purity
- —
- Price per mg
- $1.19$94.99 / 80mg
Amino MetricsTier Dtested
- Purity
- —
- Price per mg
- $7.00$139.99 / 20mg
Learn more about what Pexo Labs carries
Rated higher than Pexo Labs, with a reader code
Pexo 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.
6.98/10 · Fair · carries 18 of the same products
6.14/10 · Fair · carries 17 of the same products
5.95/10 · Fair · carries 18 of the same products
Pexo Labs: Frequently Asked Questions
Is Pexo Labs legit?
Pexo Labs scores 3.63 out of 10 (Poor, #85 of 100) as of November 1, 2026 and does not meet our testing gate: 14 of the 19 products we score carry a certificate, none confirmed with the issuing lab; those certificates are vendor-issued or from a source whose independence we could not establish. Its strongest area is pricing (8.7/10); its weakest is operating history (0.9/10), with about three months of records.
Is there a Pexo Labs promo code, coupon code, or discount code?
We do not have a verified Pexo Labs promo code or coupon code right now. When Pexo 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 Pexo Labs discount.
Does Pexo 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. Certificates naming Amino Metrics are not counted as independent testing: we could not establish that laboratory's independence, so each scores a flat 2.0 of 10.
Where can I see Pexo Labs' COAs?
We have no Pexo Labs certificate of analysis on file that we could verify at audit time for any of the 20 products we track. The "Pexo Labs COAs and lab test results" table on this page shows the status of each product, and it updates when Pexo Labs publishes a certificate we can check.
What peptides does Pexo Labs carry?
Pexo Labs carries Glutathione, IGF-1 LR3, GLOW, Semax, Kisspeptin-10, Retatrutide, Tirzepatide, Tesamorelin, and 12 more. Current per-milligram pricing, COA links, and verification keys for each are in the comparison table on this page.
Is the Pexo 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.
Pexo Labs3.63Poor