Biomarkers in Chemotherapy-Induced Peripheral Neurotoxicity

Subjects will have up to five EPR oximetry readings at each study visit. Subjects will place the foot with the paramagnetic ink injection between the two magnets of the EPR device. Continuous scans will be acquired for 10 minutes while the subject breathes room air, 10 minutes while the subject breathes enriched 100% oxygen, and 10 minutes while breathing room air again.