

M | |
| Magnetic Resonance Angiography | HLCMS |
| Magnetic resonance imaging | Gale Encyclopedia of Mental Disorders |
| Magnetic Resonance Imaging (MRI) | Gale Encyclopedia of Neurological Disorders |
| Magnetic Resonance Imaging (MRI) | HLCMS |
| Mammography | HLCMS |
| Mediastinoscopy | Gale Encyclopedia of Medicine |
| Mediastinoscopy with Biopsy | HLCMS |
| Mental Status Examination | Gale Encyclopedia of Medicine |
| Methymalonic Acid Test | HLCMS |
| Minnesota Multiphasic Personality Inventory (MMPI-2) | Gale Encyclopedia of Medicine |
| Mononucleosis Spot Test | HLCMS |
| More Than Just Pee in a Cup: Urine Cytology | HLCMS |
| Multiple-Gated Acquisition (MUGA) Scan | Gale Encyclopedia of Medicine |
| Muscle Biopsy | HLCMS |
| Myelography | Gale Encyclopedia of Medicine |
| Myocardial Biopsy | Gale Encyclopedia of Medicine |


