ALT (alanine aminotransferase) (fingerstick)

What is ALT?

ALT (Alanine Aminotransferase) is an enzyme primarily present in the liver. It plays a crucial role in amino acid metabolism, where it helps convert alanine, an amino acid, into glucose that the body can use for energy.

Why should you have ALT tested/drawn?

Testing ALT levels is useful for assessing liver health. Elevated levels may indicate liver damage or a liver condition, while normal levels usually suggest a healthy liver. It is particularly useful for individuals at risk of liver diseases, such as those with a history of alcohol use, hepatitis infection, or those taking certain medications that can affect the liver.

What does it indicate?

ALT levels in the blood provide insight into the integrity and function of liver cells. An increase in ALT in the blood suggests that liver cells are damaged and that the enzyme is leaking from the cells into the bloodstream.

What does a high ALT level mean?

A high ALT level can indicate liver damage or inflammation. Possible causes include viral hepatitis, alcohol abuse, fatty liver disease, and certain medications. It is important to further investigate high levels to identify and address the specific cause of the liver condition.

What does a low ALT level mean?

A low ALT level is generally considered normal and usually does not indicate a specific problem. In rare cases, an extremely low level may suggest malnutrition or reduced liver function.