Health Topics
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URL of this page: https://medlineplus.gov/lab-tests/
Learn about medical tests, including what the tests are used for, why a doctor may order a test, how a test will feel, and what the results may mean.
Medical tests can help detect a condition, determine a diagnosis, plan treatment, check to see if treatment is working, or monitor the condition over time. A doctor may order these tests as part of a routine checkup, to check for certain diseases and disorders, or to monitor your health.
A
- Acetaminophen Level
- Acid-Fast Bacillus (AFB) Tests
- ADHD Screening
- Adrenocorticotropic Hormone (ACTH)
- Albumin Blood Test
- Alcohol Use Screening Tests
- Aldosterone Test
- Alkaline Phosphatase
- Allergy Blood Test
- Allergy Skin Test
- Alpha Fetoprotein (AFP) Tumor Marker Test
- Alpha-1 Antitrypsin Testing
- Alpha-Fetoprotein (AFP) Test
- ALT Blood Test
- Ammonia Levels
- Amniocentesis (amniotic fluid test)
- Amylase Test
- ANA (Antinuclear Antibody) Test
- Anion Gap Blood Test
- Anoscopy
- Anti-Müllerian Hormone Test
- Antibiotic Sensitivity Test
- Antibody Serology Tests
- Antineutrophil Cytoplasmic Antibodies (ANCA) Test
- Appendicitis Tests
- Arterial Blood Gas (ABG) Test
- AST Test
- At-Home Medical Tests
- Autism Spectrum Disorder (ASD) Screening
- Autonomic Testing
B
- Bacteria Culture Test
- Bacterial Vaginosis Test
- Balance Tests
- Barium Swallow
- Basic Metabolic Panel (BMP)
- BCR-ABL1 Genetic Test
- Beta 2 Microglobulin (B2M) Tumor Marker Test
- Bilirubin Blood Test
- Bilirubin in Urine
- Blood Alcohol Level
- Blood Differential
- Blood Glucose Test
- Blood in Urine
- Blood Smear
- Bone Density Scan
- Bone Marrow Tests
- BRAF Genetic Test
- BRCA Genetic Test
- Breast Biopsy
- Bronchoscopy and Bronchoalveolar Lavage (BAL)
- BUN (Blood Urea Nitrogen)
- Burn Evaluation
C
- C-Peptide Test
- C-Reactive Protein (CRP) Test
- C. diff Testing
- CA 19-9 Blood Test (Pancreatic Cancer)
- CA-125 Blood Test (Ovarian Cancer)
- Calcitonin Test
- Calcium Blood Test
- Calcium in Urine Test
- Calprotectin Stool Test
- Carbon Dioxide (CO2) in Blood
- Catecholamine Tests
- CCP Antibody Test
- CD4 Lymphocyte Count
- CEA Test
- Celiac Disease Screening
- Cerebrospinal Fluid (CSF) Analysis
- Ceruloplasmin Test
- Chickenpox and Shingles Tests
- Chlamydia Test
- Chloride Blood Test
- Cholesterol Levels
- Chorionic Villus Sampling (CVS)
- Chymotrypsin in Stool
- Coagulation Factor Tests
- Cognitive Testing
- Cold Stimulation Test
- Colorectal Cancer Screening Tests
- Colposcopy
- Complement Blood Test
- Complete Blood Count (CBC)
- Comprehensive Metabolic Panel (CMP)
- Concussion Tests
- Cord Blood Testing and Banking
- Cortisol Test
- Creatine Kinase
- Creatinine Test
- Crystals in Urine
- CSF Immunoglobulin G (IgG) Index
- Cytomegalovirus (CMV) Tests
H
- Haptoglobin (HP) Test
- Hearing Tests for Adults
- Hearing Tests for Children
- Heart Disease Risk Assessment
- Heavy Metal Blood Test
- Helicobacter Pylori (H. Pylori) Tests
- Hematocrit Test
- Hemoglobin A1C (HbA1c) Test
- Hemoglobin Electrophoresis
- Hemoglobin Test
- Hepatitis Panel
- HER2 Tumor Marker Test
- Herpes (HSV) Test
- HIV Screening Test
- HIV Viral Load
- Homocysteine Test
- How to Cope with Medical Test Anxiety
- How to Prepare for a Lab Test
- How to Prepare Your Child for a Lab Test
- How to Understand Your Lab Results
- Human Papillomavirus (HPV) Test
- Hysteroscopy
L
- Lactate Dehydrogenase (LDH) Isoenzymes Test
- Lactate Dehydrogenase (LDH) Test
- Lactate Test
- Lactose Tolerance Tests
- Laparoscopy
- Legionella Tests
- Lipase Tests
- Lipoprotein (a) Blood Test
- Liver Function Tests
- Lung Cancer Genetic Tests
- Lung Function Tests
- Luteinizing Hormone (LH) Levels Test
- Lyme Disease Tests
M
- Magnesium Blood Test
- Malaria Tests
- MCV (Mean Corpuscular Volume)
- Measles and Mumps Tests
- Measuring Blood Pressure
- Mental Health Screening
- Methylmalonic Acid (MMA) Test
- Microalbumin Creatinine Ratio
- Mononucleosis (Mono) Tests
- MPV Blood Test
- MRSA Tests
- MTHFR Mutation Test
- Mucus in Urine
- Myasthenia Gravis Tests
- Myelography
P
- Panic Disorder Test
- Pap Smear
- Parainfluenza Tests
- Parathyroid Hormone (PTH) Test
- Partial Thromboplastin Time (PTT) Test
- PCR Tests
- PDL1 (Immunotherapy) Tests
- PET Scan
- Pharmacogenetic Tests
- Phenylketonuria (PKU) Screening
- Phosphate in Blood
- Phosphate in Urine
- Platelet Tests
- Pleural Fluid Analysis
- Pneumococcal Disease Tests
- Porphyrin Tests
- Postpartum Depression Screening
- Potassium Blood Test
- Prealbumin Blood Test
- Pregnancy Test
- Prenatal Cell-Free DNA Screening
- Prenatal Panel
- Procalcitonin Test
- Progesterone Test
- Prolactin Levels
- Prostate-Specific Antigen (PSA) Test
- Protein C and Protein S Tests
- Protein Electrophoresis by Immunofixation Blood Test
- Protein in Urine
- Prothrombin Time Test and INR (PT/INR)
- PTEN Genetic Test
- Pulse Oximetry
S
- Salicylates Level
- Semen Analysis
- Sentinel Lymph Node Biopsy
- Sexually Transmitted Infection (STI) Tests
- SHBG Blood Test
- Skin Biopsy
- Skin Cancer Screening
- Sleep Study
- Smooth Muscle Antibody (SMA) Test
- Sodium Blood Test
- Sputum Culture
- Stool Elastase
- Strep A Test
- Strep B Test
- Stress Tests
- Suicide Risk Screening
- Sweat Test for Cystic Fibrosis
- Synovial Fluid Analysis
- Syphilis Tests
T
- Testosterone Levels Test
- Therapeutic Drug Monitoring
- Thyroglobulin
- Thyroid Antibodies
- Thyroxine (T4) Test
- Total Protein and Albumin/Globulin (A/G) Ratio
- TP53 Genetic Test
- Trichomoniasis Test
- Tricyclic Antidepressant (TCA) Screen
- Triglycerides Test
- Triiodothyronine (T3) Tests
- Troponin Test
- TSH (Thyroid-stimulating hormone) Test
- Tuberculosis Screening
- Tumor Marker Tests