What Are Pulmonary Function Tests (PFTs)? Pulmonary function tests (PFTs) are lung tests. They show how well your lungs work. They’re noninvasive, which means that the doctor doesn’t cut you or put ...

What Is a Liver Function Test? A liver function test is one of a group of tests that check levels of certain enzymes and other proteins in your blood. Some of the tests look for enzymes that you’d ...

Liver function tests are blood tests that can be used to monitor the health of your liver. Ask the doctor what you need to do to prepare. In some cases you may need to avoid food or certain ...

Doctors carry out pulmonary function tests to check how well a person’s lungs work and identify any issues. The tests are noninvasive and provide measurements, such as lung capacity, volume, and gas ...

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. Abnormal results can indicate liver ...

Jay N. Yepuri, MD, MS, FACG, is a board-certified gastroenterologist and member of the Digestive Health Associates of Texas Board of Directors and Executive Committee. A liver function test checks how ...