Multiplex bead assay.
Collect specimen in a lavender top tube Monday - Thursday only. Send intact EDTA whole blood at room temperature. Must be received by Cincinnati Children's Hospital within 24 hours of collection. Alternatively, centrifuge, aliquot plasma into a plastic vial and freeze.
Test includes GM-CSF, IFNg, IL-1 beta, IL-10, IL-2, IL-4, IL-5, IL-6, IL-8, and TNFa. Test sent to Cincinnati Children's Hospital.