Zeptix Labs Review: Pricing, COAs, Testing, and What We Found
An independent evidence review of Zeptix Labs (zeptixlabs.com): 20 catalog rows, 18 comparable vial prices, and 15 certificates that resolve at Freedom Diagnostics or Accumark Labs under the Zeptix Labs client.
Zeptix Labs is now a curated vendor on PeptideBenchmark because the storefront publishes variation prices and a certificate library a reader can open before buying.
Reviewed September 24, 2026. PeptideBenchmark had no affiliate, coupon, sponsorship, or paid-placement relationship with Zeptix Labs when this evidence review was written. Relationship update, September 24, 2026: PeptideBenchmark now discloses a referral link at /ref/XVVXY/. The link records attribution and does not change the findings, score, or ranked prices. The vendor sells research-use-only products; this is a commercial-transparency and documentary-evidence review, not human-use guidance or medical advice.
The short version
Zeptix Labs listed 15 parent products. Eighteen vial strengths had a comparable regular price. Bacteriostatic water stays off the peptide board. The BPC-157 and TB-500 blend, labeled 10 mg/10 mg, was out of stock.
Six Freedom reports and nine Accumark AccuVerify pages name Zeptix Labs. Ranked prices are the regular list price. The later referral link records attribution and does not change those prices.
Pricing
Ranked prices are the regular single-vial list price. Several products were showing a lower current price. The site also offers WELCOME15 and a spin-wheel discount. Neither is folded into the ranked price. PeptideBenchmark’s referral link, added later the same day, records the visit and does not take a percentage off.
GLP-1 S, GLP-2 T, and GLP-3 R are mapped to semaglutide, tirzepatide, and retatrutide because that is what the certificates say.
Testing
The public COA library has 15 PDFs.
What the Freedom reports support: identity, HPLC purity, and net content, plus endotoxin and microbial results on some of those six reports.
What the Accumark reports support: each sample code opens an Accumark Labs AccuVerify page under the Zeptix Labs client, with identity and HPLC purity. Average reported purity across the certificates with a result below 100% was about 99.6%. The GHK-Cu 50 mg Accumark result is 100% and is excluded from that average.
Ipamorelin, melanotan II, the 10 mg tirzepatide, the 10 mg semaglutide, the 30 mg retatrutide, and the out-of-stock BPC/TB blend had no matching certificate in the library on the review date.
What we did not verify
No physical vial was tested by PeptideBenchmark. The St. Petersburg street line is the address the footer publishes. The suite number is a published mailing line, not a facility inspection.
Bottom line
Zeptix Labs earns a curated profile on a public catalog and a certificate library that resolves at Freedom Diagnostics and Accumark Labs under the Zeptix Labs client. A strength without its own certificate is not treated as tested.
- See the live Zeptix Labs vendor profile for current scores and trust metrics.
- Browse Zeptix Labs certificates in the COA database.
- Compare prices on the Pricing board and build a stack in the Stack Builder.
- Read how vendors are scored in the scoring methodology.
- Official site: zeptixlabs.com.
Common questions
Does Zeptix Labs publish COAs?
Yes. The September 24, 2026 review found 15 certificate PDFs in the public COA library. Six resolve at Freedom Diagnostics and nine resolve at Accumark Labs, all under the Zeptix Labs client.
What are GLP-1 S, GLP-2 T, and GLP-3 R?
They are Zeptix Labs house codes. The published certificates identify them as semaglutide, tirzepatide, and retatrutide.
Does PeptideBenchmark have an affiliate relationship with Zeptix Labs?
Not at the time of the September 24, 2026 evidence review. Later the same day, PeptideBenchmark added a disclosed referral link, /ref/XVVXY/. That link records attribution and does not change ranked prices. WELCOME15 and the spin-wheel discount remain the vendor’s own promotions.
Where does Zeptix Labs ship from?
The footer lists Zeptix Labs LLC at 7901 4th St N STE 300, St. Petersburg, FL 33702. The About page says orders placed before 6 PM Eastern ship the same business day, with free shipping over $200.