Alanine aminotransferase (ALT) is an enzyme primarily found in your liver. An enzyme is a protein that helps speed up ...

Blood tests can help with the diagnosis of autoimmune hepatitis. These include tests for increased liver enzymes or antibody levels. However, other tests are necessary to confirm the diagnosis.

Testing a person’s blood for a type of protein called phosphorylated tau, or p-tau, could be used to screen for Alzheimer’s disease with “high accuracy,” even before symptoms begin to show, a new ...

It’s common for doctors to recommend getting bloodwork following a medical appointment or routine check-up. Blood tests can identify deficiencies in vitamins or minerals, immune system problems, or ...

The tests have not been approved by federal regulators, but that hasn’t stopped patients from wanting them — and doctors from worrying.