Interleukin 9 (HP40, P40) is a pleiotropic cytokine that has effects on both myeloid and lymphoid cells. It is produced by at least 2 subtypes of T helper cells. Th2 cells were the first cell type that was recognized to produce IL-9. Recently Th17 T cells have been found to secrete IL-9. Naïve T cells treated with TGF-β and IL-4 differentiate into the TH9 subtype. IL-9 binds to its cognate receptor IL9R, also known as CD129, which activates the JAK/STAT network. IL-9 is a biomarker for allergen-induced inflammation, extracellular parasites, asthma, and cancer.

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IL-9 assays are available for human, NHP, and mouse samples in both single and multiplex formats.
Select these or create a custom multiplex assay including IL-9 with the U-PLEX Assay Designer.


IL-9 Singleplex Products

Our IL-9 immunoassays provide fast, accurate, reproducible, and highly sensitive measurements of IL-9. MSD’s MULTI-ARRAY technology uses simple protocols, requires minimal sample, and quantifies analyte concentration over a wide dynamic range.


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IL-9 Multiplex Products

Our multiplex panels let you process up to 10 analytes simultaneously in each well of a MULTI-SPOT microplate. They provide the same outstanding performance as our singleplex immmunoassays while saving money, sample, and time.


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Related Custom Assays

The following related assays are not in our catalog but may be available as custom orders. Custom orders are typically shipped in 3 to 6 weeks. You may request pricing and availability for the assays below using our Custom Assay Quote Request form.

  • IL-9 - Human, Mouse, Non-human primate
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