Neopterin, (erythro-L)-Isomer

Medical Condition:
Neopterin, (erythro-L)-Isomer

A pteridine derivative present in body fluids; elevated levels result from immune system activation, malignant disease, allograft rejection, and viral infections. (From Stedman, 26th ed) Neopterin also serves as a precursor in the biosynthesis of biopterin.