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
7 - 14 days
Collect specimen in a red top tube; do not use SST tube. Centrifuge, aliquot serum into a plastic vial and freeze.
Test performed by Quest Diagnostics-Nichols Institute.