Peptix USA Review
Scored 8.11/10 on the published Peptide Source Review formula: lab credibility, shipping, pricing, operating history, and transparency.
- COAs on file
- 7
COAs on file
- Confirmed at the lab
- 5
Confirmed at the lab
- Products
- 5
Products
- Labs
- 2
Labs
8.11/ 10
Last scored
No testing cap
- Lab credibility and recency55%8.6 (show how this was scored)
- Shipping and refund20%9.0 (show how this was scored)
- Pricing15%8.9 (show how this was scored)
- Operating history5%1.3 (show how this was scored)
- Business transparency5%3.5 (show how this was scored)
Weights are fixed for every vendor. Select a row to see how it was scored.
Is Peptix USA legit?
Peptix USA scores 8.11 out of 10 (Strong, #2 of 100) as of November 5, 2026 and passes our testing gate: all 5 products we score carry a certificate, 5 confirmed with the issuing lab (labs we grade A to B+). Its strongest area is shipping and refunds (9.0/10); its weakest is operating history (1.3/10), with about six months of records.
On lab evidence, the heaviest-weighted factor, Peptix USA has independently verified third-party COAs, with COA work on record from ILS Laboratories, Freedom Diagnostics Testing. We hold 7 lot certificates in all. Its lowest price per milligram in our data is on GLOW (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 credibility8.6/10
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 · first seen 2026-10-18
- 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 99.66% (99.0% up to but not including 99.7%)
- GLOW8.0
Certificate from Freedom Diagnostics Testing, tier A · first seen 2026-10-18
- 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 99.46% (99.0% up to but not including 99.7%)
- Retatrutide9.5
Certificate from ILS Laboratories, tier B+ · first seen 2026-10-18
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier B+ (ILS Laboratories)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Endotoxin test
- +0.5Sterility test (USP <71> or a PCR / rapid sterility screen)
- +0.5Purity 99.9% (99.7% or higher)
- Tesamorelin9.5
Certificate from ILS Laboratories, tier B+ · first seen 2026-10-20
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier B+ (ILS Laboratories)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Endotoxin test
- +0.5Sterility test (USP <71> or a PCR / rapid sterility screen)
- +0.5Purity 99.8% (99.7% or higher)
- Tirzepatide9.0
Certificate from ILS Laboratories, tier B+ · first seen 2026-10-18
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier B+ (ILS Laboratories)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Endotoxin test
- +0.5Sterility test (USP <71> or a PCR / rapid sterility screen)
- 0.0Purity 99.67% (99.0% up to but not including 99.7%)
Mean of 5 products: 44.0 ÷ 5 = 8.800.
- −0.20CLAIM Claims the certificates do not support (cap −0.3): '7x testing. Every batch. No exceptions.' and 'Full panel + independent CoA on every batch', while the Freedom reports for BPC-157 and Glow cover identity, purity and content only; ISO/IEC 17025 claim contradicted for Freedom (accredited:false)
8.800 − 0.200 = 8.600, rounded to 0.1: 8.6/10.
Testing gate: 5 of 5 products have a certificate from a directory laboratory (not tier D, not self-issued) with the key confirmed at the laboratory. That is at least half, so the vendor counts as third-party tested and no cap applies.
Shipping and refunds9.0/10
- +2
Returns and refunds
Peptix accepts returns for 7 days from the date of delivery, provided the product is still unopened and factory-sealed
- +2
Lost or damaged parcels
If a package is confirmed lost in transit, arrives damaged, or is stolen after delivery, we reship it at no cost
- +1.5
Dispatch time
Orders paid before 2:00 PM ET on a weekday ship the same day.
- +1
Tracking on all orders
Every order ships within the United States with tracking, and the tracking number is emailed to you.
- +1.5
Payment you can dispute
Checkout card payment ('onCardPayStart' via the 'tagada' card processor), plus Apple Pay, Zelle and wire
- +1
Shipping rates published
Site banner 'FREE SHIPPING OVER $${Ks}' with default Ks=150 (value can be overridden by store config)
Total +9: 9.0/10.
Pricing8.9/10
We compared Peptix USA’s current single-vial prices on 5 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% below the market median (ratio 0.73), which the published scale maps to 8.9/10. checked
Operating history1.3/10
Counted from April 13, 2026, the earliest dated evidence of this business operating: 6.3 months as of October 22, 2026, which the published table maps to 1.3/10.
Domain peptixusa.com registered 2026-04-13 (RDAP); earliest certificate Pept2604220094 (2026-04-22). Terms page is dated 'Feb 21, 2026', before the domain existed, but a self-dated policy is not evidence of selling. Peptix USA LLC not found in Florida Sunbiz (the Terms choose Florida law) or Texas.
- 2026-04-13 Domain registration: registration rdap.verisign.com (opens in new tab)
Transparency3.5/10
- 0
Legal entity named
no entity named on terms, privacy, about, contact or in the site bundle (Peptix USA LLC appears only on lab certificates)
- 0
- +1
Phone number
reply HELP, email [email protected], or call/text +1 954 841-2264.
- 0
Named owner or staff
'our founders set out to build the supplier they wished existed' (unnamed)
- +1
Dated terms with a governing law
'Last Updated: Oct 21, 2026'; 'These Terms shall be governed by the laws of the State of Florida.'
- +1.5
Testing lab named, certificates published
ILS Labs tests Retatrutide, Tirzepatide and Tesamorelin ... Freedom Diagnostics Testing in Franklin, TN tests BPC-157 and Glow
Total +3.5: 3.5/10.
- Re-checked on 3 November 2026 after the company reported the site went down during its Halloween sale: the site was up, the event code is not counted, certificates and four of five prices are unchanged, and the tirzepatide markdown first seen that day is not yet counted as a standing price. No subscore changed.
Shop Peptix USA
- Rated 8.11/10 · Strong
- 5 COAs confirmed at the issuing lab
- Best value: GLOW at $1.21/mg
Affiliate link: we may earn a commission if you buy. It never affects the score or rank.
Current Peptix USA offers
Buy 2 Get 1 Free with code PSR
Reader code PSR applies the vendor's current live event, Buy 2 Get 1 Free (one free vial with every two, about 33% off across three). The event can change; the code follows it.
SPOOKY: 40% Off the Entire Catalog
Peptix USA's email of 2026-11-02 offers code SPOOKY for 40% off every research compound in the catalog, entered at checkout. A follow-up email the same day extended the offer by a week after site downtime interrupted the original sale, through Monday, 2026-11-09 at 11:59 PM EST.
Ends 2026-11-09
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 · 8.09to8.11
Pricing re-checked on 5 November 2026 after the market medians were recalculated with Peptyes added pricing 8.8 to 8.9.
- Audit · 8.11to8.09
Pricing recomputed on 26 October 2026: listings added for a newly reviewed vendor (StudzPeptides) moved the market median for the same products: pricing 8.9 to 8.8.
- Audit · 8.12to8.11
Pricing recomputed on 24 October 2026 after Bionova Peptides' first-review prices were recorded; other vendors move only through the market medians: pricing 9.0 to 8.9.
Earlier audits (7)
- Audit · 8.07to8.12
Lab deductions independently re-verified from primary sources on 22 October 2026; a deduction that could not be confirmed was removed or reduced. Lab 8.5 to 8.6.
- Audit · 7.94to8.07
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 7.8 to 9.0, operating history 2.0 to 1.3, transparency 5.0 to 3.5.
- Audit · 7.33to7.94
Lab score recalculated on 22 October 2026 under the uniform published rubric applied to every vendor: earlier judgement deductions that are not part of the published rubric were removed; fixed deductions apply for site statements about testing that the certificates do not bear out. Lab 7.4 to 8.5.
- Audit · 7.05to7.33
Second vendor-requested reassessment, verified on the live site the same evening. Lab rises from 7.2 to 7.4: the quality page now states which laboratory tests which product and what each panel covers, the retatrutide Freedom Diagnostics report is labelled as Freedom's, the tesamorelin date matches the ILS record, and the certificates still match the laboratories. The about, FAQ and research pages still describe every batch as tested by accredited laboratories, which the Freedom reports are not. Shipping rises from 7.0 to 7.8: sealed returns within seven days now get a free return label, damage, loss and theft share one seven-day claim window, and the weekday same-day cutoff is stated consistently. Transparency rises from 4.8 to 5.0: the dosage calculator and the trial results on product pages are gone, but 26 dosage and protocol articles quoting clinical dosing and reconstitution concentrations remain, and no operating company or address is published.
- Audit · 6.61to7.05
Vendor-requested reassessment, verified on the live site. Lab rises from 6.8 to 7.2: tesamorelin now carries an ILS Laboratories full-panel certificate, confirmed on the laboratory's portal, so every product has lab-verified testing; the quality page still overstates the testing. Shipping rises from 6.0 to 7.0: the returns policy now matches the homepage, reshipping lost, damaged or stolen parcels at no cost. Transparency rises from 4.5 to 4.8: the terms carry a current date and trial results are cited as literature, but no operating company or address is published and the dosage calculator remains.
- Audit · 6.59to6.61
Correction. The review said the site summarizes trace heavy-metal results for retatrutide lot D687432 as not detected. That was our error: ILS Laboratories' own certificate for that lot prints all five metals as not detected, and the trace cadmium and mercury values appear only in the laboratory's online record, so the site reproduces the laboratory's certificate. The statement is removed and transparency rises from 4.0 to 4.5. The other points stand.
- Audit · Initial audit
lab 6.8 / shipping 6.0 / pricing 9.0 / tenure 2.0 / transparency 4.0.
Editor’s notes
Peptix USA is a small catalog of five peptides, and every one has a certificate that checks out with the laboratory that issued it, with Peptix named as the client. Retatrutide, tirzepatide and tesamorelin carry ILS Laboratories full panels that include sterility, endotoxin and heavy-metal screens; the BPC-157 and GLOW reports from Freedom Diagnostics cover identity, purity and content only. In October 2026 the quality page was rewritten to say exactly that, and it now matches the evidence. Other pages had not caught up when we checked on October 20, 2026: the about page, FAQ and research pages still describe every batch as tested by accredited or ISO 17025 laboratories, and the site keeps a library of dosage and research protocol articles that quote approved clinical dosing and work through reconstitution concentrations. The dosage calculator and the human trial results on product pages have been removed. On 22 October 2026 prices were about a quarter below the market overall, and below the median on all five products compared. Unopened, sealed items can be returned within seven days with a free return label, with the refund issued to the original payment method, typically within five business days, and damaged, lost or stolen parcels reported within seven days are reshipped at no cost, once per order. Orders paid before 2 PM Eastern on weekdays ship the same day. The site names no operating company or address, and it launched in spring 2026. The company reported that the site went down during its Halloween sale; it was up on 3 November 2026. Outages are noted, not scored, and the event discount is not counted.
Peptix USA 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 Afirst seen
- Purity
- 99.66%
- Price per mg
- $4.00$40.00 / 10mg
Freedom Diagnostics TestingTier Afirst seen
- Purity
- 99.46%
- Price per mg
- $1.21$85.00 / 70mg
ILS LaboratoriesTier B+first seen
- Purity
- 99.9%
- Price per mg
- $5.90$59.00 / 10mg
ILS LaboratoriesTier B+first seen
- Purity
- 99.8%
- Price per mg
- $6.20$62.00 / 10mg
ILS LaboratoriesTier B+first seen
- Purity
- 99.67%
- Price per mg
- $2.90$58.00 / 20mg
Learn more about what Peptix USA carries
Peptix USA: Frequently Asked Questions
Is Peptix USA legit?
Peptix USA scores 8.11 out of 10 (Strong, #2 of 100) as of November 5, 2026 and passes our testing gate: all 5 products we score carry a certificate, 5 confirmed with the issuing lab (labs we grade A to B+). Its strongest area is shipping and refunds (9.0/10); its weakest is operating history (1.3/10), with about six months of records.
Is there a Peptix USA promo code, coupon code, or discount code?
We do not have a verified Peptix USA promo code or coupon code right now. When Peptix USA runs a sale or issues a discount code, we post it here and on our promos page, so bookmark this page for the latest Peptix USA discount.
Does Peptix USA use third-party lab testing?
Yes. We have independently verified third-party COA evidence for this vendor. Laboratories on the certificates we hold: ILS Laboratories, Freedom Diagnostics Testing.
Where can I see Peptix USA's COAs?
In the "Peptix USA COAs and lab test results" table on this page. We hold 7 certificates for Peptix USA, covering 5 of the 5 products we track, issued by 2 laboratories (ILS Laboratories, Freedom Diagnostics Testing). 5 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 Peptix USA carry?
Peptix USA carries BPC-157, GLOW, Retatrutide, Tesamorelin, Tirzepatide. Current per-milligram pricing, COA links, and verification keys for each are in the comparison table on this page.
Is the Peptix USA 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.
Compare Peptix USA head-to-head
Want to understand how this score was built?
Read the full methodology or the editorial integrity policy. Disclosure: the link below is an affiliate link; it never affects the score.
Peptix USA8.11Strong
5 confirmed at the labAffiliate link