Thyroid function tests are blood tests that measure hormone levels to check how well your thyroid is working. The most common tests are thyroid-stimulating hormone (TSH) and thyroxine (T4), which help ...

Kidney function tests are simple blood and urine tests that can identify problems with your kidneys. These tests can estimate your glomerular filtration rate (GFR), which indicates how quickly your ...

Liver function tests are blood tests that measure substances that the liver produces. Doctors can use these results to evaluate the health of a person’s liver. The liver serves several essential ...

What Are Pulmonary Function Tests? To diagnose asthma, your doctor will review your symptoms, your medical and family history, and may do lung function tests (also called pulmonary function tests).