Hepatitis A (HAV, Hep A) Topic Guide

Hepatitis A (HAV, Hep A): Hepatitis A virus (HAV, Hep A) refers to liver inflammation caused by infection with the hepatitis A virus. Causes of HAV is generally from person to person via contaminated water, blood, stool, or direct contact. Symptoms of hepatitis A virus include:

nausea,
vomiting,
diarrhea,
fever,
rash,
fatigue,
jaundice,
abdominal pain, and
pale or gray-colored stools.

Treatment for hepatitis A virus is focused on relieving symptoms. There is a vaccine to prevent hepatitis A virus.

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Liver Blood Tests Liver blood tests, or liver function tests, are used to detect and diagnose disease or inflammation of the liver. Elevated aminotransferase (ALT, AST) levels are measured as well as alkaline phosphatase, albumin, and bilirubin. Some diseases that cause abnormal levels of ALT and AST include:

hepatitis A, B, and C;
cirrhosis;
iron overload; and
Tylenol liver damage.

Medications also cause elevated liver enzymes. There are less common conditions and diseases that also cause elevated liver enzyme levels.

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