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New research peptides recently added for laboratory use.

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  • High-purity peptides for research use only.

Immunology & Host Response

Explore Immunology & Host Response solutions designed for rigorous laboratory research. Our offerings support cytokine profiling, immune signaling assays, and innate immunity models with documented purity, batch documentation, and analytical verification for research-use-only applications.
Immunology & Host Response

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Immunology & Host Response Compounds

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Antimicrobial Peptides

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Neuropeptides

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Repair Peptides

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Thymic Peptides

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What People Are Saying

50,000+ 5-STAR REVIEWS

Order showed up in three days, faster than I expected honestly. Vials were intact, insulation still cold to the touch, and the invoice matched exactly what I ordered. Smooth process start to finish...

James C.

I'm pretty far out and was expecting a week minimum, but it got here in 4 days. Box was properly insulated — not just a token ice pack thrown in — and the vial came in perfect shape. Solid fulfillment...

Marcus T.

LL-37 is tricky to source but PSL nailed it. Clean product, proper documentation, and actually responsive customer support when I had questions about storage recommendations 🔬 Our host-defense...

James C.

We study antimicrobial peptides and finding research-grade LL-37 at 5mg was exactly what we needed. Purity checked out on our end, biofilm interaction assays came back with expected MIC values...

Sofia H.

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All products are supplied in powder (lyophilized) form and must be reconstituted with an appropriate diluent for research use only. Research supplies (e.g., syringes, bacteriostatic water) are not included. No dosing guidance is provided. We comply with all applicable local and state laws governing Research-Only Chemical sales. We are not a pharmacy and do not promote or provide guidance for human or animal use.