This test measures the concentration of an antibody in your blood that may mean you have the autoimmune disease myasthenia gravis.

The acetaminophen drug level is a blood test used to screen for the presence of the common pain reliever acetaminophen.

A1C is a blood test used to screen people to find out whether they have diabetes or prediabetes.

This test measures the amount of 5-hydroxyindoleacetic acid in your urine. The test can help find out if you have a carcinoid tumor.

You have come to the decision with your healthcare provider to try an antidepressant medicine for depression. To take antidepressant drugs medicine safely, you will need some information, which you can find here.

A bone marrow biopsy involves removing a small sample of the bone marrow inside your bones for testing. Read on to learn what to expect before, during, and after this procedure.

This prenatal test involves taking a sample of tissue from the placenta to test for chromosomal abnormalities and certain other genetic problems.

A computed tomography (CT) scan is an imaging test that uses X-rays and a computer to make detailed images of the body. A CT scan shows details of the bones, muscles, fat, and organs.

Pulmonary angiogram is an X-ray image of the blood vessels of the lungs.

A mediastinoscopy is a procedure used to examine the mediastinum. This is the space behind the breastbone (sternum). Read on to learn more about the procedure, and what to expect.