7 - 14 days
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Enzyme-Linked Immunosorbent Assay (ELISA)
IFNalpha is mainly produced by monocytes/macrophages, lymphoblastic cells and fibroblasts, but different types of virus activated cells may produce the cytokine. IFNalpha shows antiviral, antiparasitic, and antiproliferative properties. Increased levels suggest recent or ongoing viral or parasitic infection.
< or = 3 IU/mL