A complete blood count (CBC) is a common test to diagnose anemia by measuring red blood cell count, hemoglobin, and hematocrit levels. Iron deficiency is a common cause of anemia, and doctors may ...

A glutamic-oxaloacetic transaminase (SGOT) or aspartate aminotransferase (AST) test measures the levels of the enzyme AST in the blood to assess liver health. Numbers over 50 for cisgender males and ...

A rapid plasma reagin (RPR) test is a blood test used to screen you for syphilis. It works by detecting the nonspecific antibodies that your body produces while fighting the infection. Syphilis is a ...

TB tests use phlegm — not the easiest thing to get or work with. It takes time for results. And there can be false negatives ...

Shoulder problems are one of the most common complaints that doctors need to diagnose. Speed’s test and Yergason’s test are both ways for your doctor to physically examine the area around your ...

An estradiol (E2) test measures levels of the hormone E2 in the blood. The results can reflect issues ranging from fertility problems to liver damage. The right estrogen levels are essential for ...

Update: This program has ended and free tests are not current available from the government website. The Biden administration has resumed taking orders for free at-home COVID-19 tests as of Sept. 25.