Update Type: Test Code Change
Test Updated: 11/20/2024
Test Overview
Test Methodology
Enzyme-Linked Immunosorbent Assay (ELISA)
Test Usage
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.
Reference Range *
< or = 3 IU/mL
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Analytic Time
7 - 14 days
Soft Order Code
SLM
Laboratory
Sendout
Reference Laboratory
Quest Nichols (34887)
Section
Special Testing
Specimen Requirements
Collection
Collect specimen in a red top tube; do not use SST tube. Centrifuge, aliquot serum into a plastic vial and freeze.
Normal Volume
1 mL serum
Minimum Volume
0.5 mL serum
Rejection Criteria
SST tube not acceptable.
Additional Information
Test performed by Quest Diagnostics-Nichols Institute.
Billing
CPT Code
83520