Independently Assayed Peptides
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
99%+ Purity
Independently tested by accredited third-party labs.
Same-Day Shipping
Orders placed before 1pm EST ship the same business day.
COAs Available
Certificate of Analysis included for full transparency on every compound.
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
Pull the COA for any product in our catalog and verify the math yourself.
View COAs