Immune Research Peptides

Immunomodulatory peptides regulate innate and adaptive immune responses through mechanisms such as antimicrobial activity, cytokine modulation, and T-cell maturation. They are studied in infection, autoimmunity, and immune reconstitution models.

Available Immune Peptides (3)

Thymosin Alpha-1 and immune research peptides

Immune peptides are studied for how they influence innate and adaptive immunity. Thymosin Alpha-1 is a thymic peptide studied for T-cell maturation; Thymalin is a thymus-derived bioregulator complex; and LL-37 (CAP-18) is the only human cathelicidin, studied for antimicrobial and wound-healing activity.

Further reading on each compound, with published references, is available in the research hub.

Buying immune research peptides

Each product lists its HPLC purity specification (≥98% or higher). Where a CertikLabs certificate of analysis (COA) is available for a strength and lot, it is linked from that product page with HPLC purity, LC-MS identity, and concentration results. Review sequence, form, strength and available lot documentation for the specific immunomodulatory research material. For an evidence-based purchase review, use the research peptide supplier checklist, learn how peptide lab verification works, and confirm that any available report matches the ordered product, strength and lot. All compounds are supplied lyophilized, strictly for in-vitro laboratory research. They are not drugs, supplements or cosmetics and are not for human or veterinary use — see Research Use Only.

Frequently asked questions

What is LL-37?

LL-37 is a 37-amino-acid antimicrobial peptide cleaved from the human protein CAP-18, studied in infection and wound-healing models.

Research Use Only. All PeptidesDirect compounds are sold for licensed laboratory research and independently HPLC-verified.