REFERENCE LABORATORY CHANGE
CXCL9, Plasma
Order Code: CCXCL
Fee Code AB127 (CPT 83520)
Reference Laboratory: Cincinnati Children’s Hospital #11660686
New Order Code: VCXCL
New Reference Lab: Viracor #33607
Requests for CXCL9 will be sent to Eurofins Viracor effective August 27, 2026.
CXCL9 (also known as Monokine Induced by Gamma Interferon [MIG]) is an IFN-γ-inducible chemokine that plays a central role in T cell-mediated immune activation and trafficking. It signals through the CXCR3 receptor, recruiting activated T cells to sites of inflammation and allograft injury. Quantitative measurement of CXCL9 in plasma provides a non-invasive assessment of ongoing immune activation that may precede clinical signs of rejection or immune dysregulation.
Collection Instructions: Collect specimen in a lavender top (EDTA) tube. Centrifuge within 2 hours of collection, aliquot 1 mL of plasma into a screw capped plastic vial, and freeze.
Reference Range: <77pg/mL