A fecal fat test measures the amount of fat in a person’s stool. The test assesses the digestive function and absorption of fat in the gastrointestinal tract. Several medical conditions cause poor fat ...

Genetic testing, often via a blood sample, can confirm a muscular dystrophy diagnosis. It can also identify specific gene mutations to help guide treatment and determine whether or not someone is a ...

STI testing can check for chlamydia, gonorrhea, herpes, HIV, and other conditions. Testing is based on a blood or urine sample or a swab. People can have a test in a doctor’s office, clinic, or, in ...

A potassium blood test measures the potassium level in your blood to check your general health and diagnose conditions.

What Is the Platelet Aggregation Test? A platelet aggregation test is a blood test that looks at how well your blood cells called platelets clump together and clot. It is sometimes called a platelet ...