Dr. Ibrahim A. Hashim is Professor of Pathology, Chief of Clinical Pathology and Clinical Chemistry, and Director at the University of Texas Southwestern Medical Center (UTSW) at Dallas, Texas. He has over 29 years of experience as a clinical chemist and an educator. His work experience includes large university teaching hospitals in the United Kingdom and United States. In addition to directing the Clinical Chemistry Fellowship Program, he gives clinical chemistry didactic lectures to pathology residents, fellows, and clinical laboratory scientists. He also lectures on the Fundamentals for Clinical Reasoning course to medical students at UTSW. He is the director of the Clinical Chemistry and the Laboratory Management Rotations for the Pathology Residency program at UTSW and regularly contributes to the scientific literature on clinical chemistry and clinical laboratory topics. Dr. Hashim served as Director on the American Board of Clinical Chemistry and has co-authored Endocrine Society Practice Guidelines on Hypopituitarism.