Chao Sun, PhD, CLS is a Clinical Chemistry Fellow at Children’s Hospital Los Angeles, affiliated with the University of Southern California. He earned his Ph.D. from The Ohio State University, where his research focused on the mechanosensation of axons in traumatic brain injury. Dr. Sun has published several peer-reviewed publications on neuronal injury, axon-glial signaling, and diagnostic method evaluation. His current work involves MassSepc method development and clinical validation of diagnostic assays.