Official websites use .gov A .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. 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. Acetaminophen Level Acid-Fast Bacillus (AFB) Tests 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 Amniocentesis (amniotic fluid test) ANA (Antinuclear Antibody) Test Anion Gap Blood Test Anti-Müllerian Hormone Test Antibiotic Sensitivity Test Antibody Serology Tests Antineutrophil Cytoplasmic Antibodies (ANCA) Test Appendicitis Tests Arterial Blood Gas (ABG) Test At-Home Medical Tests Autism Spectrum Disorder (ASD) Screening Autoantibody Testing Autonomic Testing Bacteria Culture Test Bacterial Vaginosis Test 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 Bone Density Scan Bone Marrow Tests BRAF Genetic Test BRCA Genetic Test Bronchoscopy and Bronchoalveolar Lavage (BAL) BUN (Blood Urea Nitrogen) Burn Evaluation 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 Celiac Disease Screening Cerebrospinal Fluid (CSF) Analysis Ceruloplasmin Test Chickenpox and Shingles Tests Chloride Blood Test Cholesterol Levels Chorionic Villus Sampling (CVS) Chymotrypsin in Stool Coagulation Factor Tests Cognitive Testing Cold Stimulation Test Colorectal Cancer Screening Tests Complement Blood Test Complete Blood Count (CBC) Comprehensive Metabolic Panel (CMP) Concussion Tests Cord Blood Testing and Banking Creatine Kinase Creatinine Test Crystals in Urine CSF Immunoglobulin G (IgG) Index Cytomegalovirus (CMV) Tests Dengue Fever Test Depression Screening Developmental and Behavioral Screening Tests DHEA Sulfate Test Diabetic Foot Exam Differential Diagnosis Doppler Ultrasound Down Syndrome Tests Drug Use Screening Tests Dysphagia Tests Echocardiography Electrocardiogram Electrolyte Panel Electromyography (EMG) and Nerve Conduction Studies Epithelial Cells in Urine Erythrocyte Sedimentation Rate (ESR) Esophageal pH Test Estrogen Levels Test Estrogen Receptor, Progesterone Receptor Tests Fall Risk Assessment Fasting for a Blood Test Fecal Occult Blood Test (FOBT) Ferritin Blood Test Fetal Alcohol Spectrum Disorders (FASD) Screening Flu (Influenza) Test Follicle-Stimulating Hormone (FSH) Levels Test Food Allergy Testing Free Light Chains Fungal Culture Test Galactosemia Tests Gamma-glutamyl Transferase (GGT) Test Gastric Emptying Tests Glomerular Filtration Rate (GFR) Test Glucagon Blood Test Glucose in Urine Test Growth Hormone Tests Haptoglobin (HP) Test Hearing Tests for Adults Hearing Tests for Children Heart Disease Risk Assessment

Heavy Metal Testing Helicobacter pylori (H. pylori) Tests Hematocrit Test Hemoglobin A1C (HbA1c) Test Hemoglobin Electrophoresis Hemoglobin Test Hepatitis Testing HER2 Tumor Marker Test Herpes (HSV) Test HIV Screening Test 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 IGF-1 (Insulin-like Growth Factor 1) Test Immunoglobulins Blood Test Insulin in Blood Intravenous Pyelogram (IVP) Karyotype Genetic Test Ketones in Blood Ketones in Urine Kidney Stone Analysis Lactate Dehydrogenase (LDH) Isoenzymes Test Lactate Dehydrogenase (LDH) Test Lactose Tolerance Tests Legionella Tests Lipoprotein (a) Blood Test Liver Function Tests Lung Cancer Genetic Tests Lung Function Tests Luteinizing Hormone (LH) Levels Test Lyme Disease Tests Magnesium Blood Test MCV (Mean Corpuscular Volume) Measles and Mumps Tests Measuring Blood Pressure Meningococcal Disease Tests Mental Health Screening Methylmalonic Acid (MMA) Test Microalbumin Creatinine Ratio Mononucleosis (Mono) Tests MTHFR Gene Test Myasthenia Gravis Tests Natriuretic Peptide Tests (BNP, NT-proBNP) Neurological Exam Nitrites in Urine Obesity Screening Obsessive Compulsive Disorder (OCD) Test Osmolality Tests Ova and Parasite Test Panic Disorder Test Parainfluenza Tests Parathyroid Hormone (PTH) Test Partial Thromboplastin Time (PTT) Test PDL1 (Immunotherapy) Tests Pharmacogenetic Tests Phenylketonuria (PKU) Screening Phosphate in Blood Phosphate in Urine Pleural Fluid Analysis Pneumococcal Disease Tests Porphyrin Tests Postpartum Depression Screening Potassium Blood Test Prealbumin Blood Test Prenatal Cell-Free DNA Screening 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 Rash Evaluation RDW (Red Cell Distribution Width) Red Blood Cell (RBC) Count Red Blood Cell (RBC) Indices Red Blood Cell Antibody Screen Respiratory Pathogens Panel Respiratory Syncytial Virus (RSV) Tests Reticulocyte Count Rheumatoid Factor (RF) Test Salicylates Level Sentinel Lymph Node Biopsy Sexually Transmitted Infection (STI) Tests SHBG Blood Test Skin Cancer Screening Smooth Muscle Antibody (SMA) Test Sodium Blood Test Suicide Risk Screening Sweat Test for Cystic Fibrosis Synovial Fluid Analysis Testosterone Levels Test Therapeutic Drug Monitoring 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 TSH (Thyroid-stimulating hormone) Test Tuberculosis Screening Tumor Marker Tests Urobilinogen in Urine Videonystagmography (VNG) Vision Screening Vitamin E (Tocopherol) Test What You Need to Know About Blood Testing White Blood Cell (WBC) in Stool White Blood Count (WBC) Whooping Cough Tests Yeast Infection Tests Zika Virus Test 17-Hydroxyprogesterone