- Abdominal MRI
- Abdominal Tap
- Abdominal Ultrasound
- Abdominal X-ray
- ABO Blood Typing
- Acoustic Reflex Test
- ACTH (Adrenocorticotropic Hormone) Test
- ACTH Suppression Test
- Activated Partial Thromboplastin Time
- Adrenocorticotropic Hormone
- AFP (Alpha-Fetoprotein) Test
- AIDS Test
- Air Contrast Study
- Alanine Aminotransferase (ALT)
- Albumin Test, Blood
- Alcohol, Breath Test
- Aldosterone in Blood
- Aldosterone in Urine
- Alkaline Phosphatase
- Allergy Tests
- Alpha-Amylase Test
- Alpha-Fetoprotein (AFP) in Blood
- ALT (Alanine Aminotransferase)
- Ambulatory Electrocardiogram
- Ammonia Blood Level Test
- Amniocentesis
- Amniocentesis for Rh sensitization during pregnancy
- Amylase Plasma Level
- Antinuclear Antibodies (ANA) Test
- Angiogram
- Angiogram of the Head and Neck
- Angiogram of the Lung
- Angiography, Fluorescein
- Ankle-brachial index test
- Anoscopy
- Anterior cruciate ligament (ACL) surgery
- Antibody test for hepatitis A
- Antibody Tests -- Antibody Tests
- Antibody Tests -- Immunoglobulins
- Antigen tests for giardiasis
- Antiglobulin Tests
- Antinuclear Antibodies (ANA) Test
- Antisperm Antibody Test
- Aortobifemoral bypass for peripheral arterial disease
- APTT
- Arm X-Ray
- Arterial Blood Gases (ABG)
- Arteriography
- Arthrogram (Joint X-ray)
- Arthroplasty for rheumatoid arthritis
- Arthroscopy
- Arthroscopy for rheumatoid arthritis
- Arthroscopy for TM disorders
- Artificial sphincter for urinary incontinence in men
- Aspartate Aminotransferase (AST) Test
- AST (Aspartate Aminotransferase) Test
- Audiometry
- Auditory Brainstem Evoked Potential (ABEP) Test
- Autopsy
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FROM CBS NEWS
TB patient visited two Calif. neonatal units
Initially 35 babies were thought to have been exposed at the hospitals for the bacteria that causes TB, but officials lowered their estimate to 26

