This document lists many common medical abbreviations and their meanings in 3 sentences or less. It includes abbreviations such as ARF for acute renal failure, AIDS for acquired immunodeficiency syndrome, AMI for acute myocardial infarction, and CXR for chest x-ray. Many lab tests are abbreviated such as ALT for alanine aminotransferase, AST for aspartate aminotransferase, and ESR for erythrocyte sedimentation rate. The list also covers imaging scans, procedures, diseases, and other medical terms that are frequently abbreviated in medical records and documents.