Zerilyx
Research
Peptides engineered for the bench, not the marketing deck. 99% Purity Guaranteed, Independently Third-Party Lab Tested.
99%+
Purity
$200+
Free Ship
COA
Included
Our Collection
Popular Products
COA Library
Get the full COA library and 10% off your first order.
Signed third-party certificates of analysis for the catalog, plus a single-use code for your first order.
Damaged in transit, reshipped
If your order arrives damaged, we reship it at no cost. Report it with photos within 7 days of delivery. This does not cover packages reported lost or stolen after carrier confirmation of delivery.
Purity you can challenge
If an independent laboratory result differs from the specification we published for your lot, contact us with the report and we will review it for a refund.
Same-day dispatch
Orders placed before 1pm EST on a business day ship the same day.
Discreet packaging
Every order ships in plain, unlabeled packaging with no product or company markings on the outside.
What Researchers Say
99%+ Purity
Verified by independent assay.
Third-Party COAs
Signed certificates on request.
Same-Day Shipping
Before 1pm EST, business days.
US-Based
Shipped and supported from New York.
About Us
Built in the Lab,
Proven on Paper
Zerilyx is a US-based supplier of research-use-only peptides. We focus on a tight catalog of well-characterized compounds rather than a sprawling list - so quality control is something we can actually guarantee.
Orders placed before 1pm EST leave the same business day, tracked end-to-end.
99%+
Purity
Same
Day Ship
Lab
Certified
99%
Purity Guaranteed
Third-Party Tested
FAQ
The Questions
We Hear Most
What exactly is a research peptide?+
A synthesized chain of amino acids produced for in-vitro and preclinical work. Our catalog is sold strictly for laboratory use - never for human or animal consumption.
How do I know the purity is real?+
Products are tested in an independent US lab for HPLC and mass-spec analysis.
Am I eligible to order?+
We sell only to verified researchers, institutions, and labs in the US. Buyers must be at least 21 and agree to handle compounds in line with local and federal regulations.
How fast will my order ship?+
Same business day for orders placed before 1pm EST, with tracking emailed once the label prints. Orders above $200 ship free anywhere in the US.
How We Prove It
Independent assay for every lot
Review signed third-party identity and purity results for the exact research compound in your order.
View COAsCOA
Identity and purity analysis on every lot. Pull the full report for the exact vial in your order.
