URMC / Encyclopedia / Collection Aortic Valve Replacement: Minimally Invasive Magnesium (Blood) Magnetic Resonance Angiography (MRA) Magnetic Resonance Imaging (MRI) of the Bones, Joints, and Soft Tissues Magnetic Resonance Imaging (MRI) of the Heart Magnetic Resonance Imaging (MRI) of the Spine and Brain Mammogram Mastectomy MDMA Drug Screen (Urine) Measles, Mumps, Rubella Antibody Mediastinoscopy Medical Nutrition Therapy for Weight Loss Mercury (Blood) Mercury (Urine) Metanephrines (Blood) Metanephrines (Urine) Methylmalonic Acid (Blood) Methylmalonic Acid (Urine) Microalbumin (Urine) Microscopic Urinalysis Minimally Invasive Spine Surgery Mitral Valve Replacement: Minimally Invasive Mitral Valve Replacement: Open Mononucleosis (Blood) MR Cholangiopancreatography MR Enterography MRSA Culture Mumps Antibody Muscle Biopsy Mycoplasma (Genital) Mycoplasma (Sputum) Myelogram Myoglobin (Blood) Myoglobin (Urine) Robotic-Assisted Myomectomy