Explore Our Biomarker Menu


IRS-1 (total)

Biological or Clinical Significance:

Insulin Receptor Substrate 1 (IRS 1) is an 165 kDa multi-phosphorylated cytoplasmic docking protein involved in metabolic and proliferative signaling by insulin, IL-4, and other cytokines. IRS 1 functions to enhance growth hormone-induced proliferative signaling. The activated insulin receptor phosphorylates IRS proteins on multiple tyrosine residues that serve as docking sites for downstream mediators of metabolic actions such as phosphatidylinositol-3 kinase. IRS proteins also undergo serine phosphorylation, which regulates its function. Phosphorylation of human IRS 1 at serines 312 and 616 (serines 307 and 612 in mouse) results in the impairment of metabolic insulin signaling pathways.



IRS-1 (total)



Experienced Running





Required Sample Volume

Disease State:

MSD Panel:

Speak To A Scientist

    I consent to receive communications (which may include, phone, email, social, and re-targeting ads) from BioAgilytix. I understand I may proactively manage my preferences or opt-out of communications with BioAgilytix at any time using the unsubscribe link provided in all of BioAgilytix’s email communications and can learn more by reading the privacy policy.


    Learn why BioAgilytix is a world-leading authority on immunogenicity studies related to ADA, NAb assay development and validation, isotyping, and more.

    Case Studies

    Learn why we’re a trusted partner to 22 of the top 25 global pharma and biotech companies.