Typical Reference RangeFrauen < 35, Männer < 50 U/l
UnitU/l
What This Value Measures
ALT (also GPT) is an enzyme found primarily in liver cells. Elevated values indicate liver stress or damage.
Elevated Value
An elevated value may indicate liver stress due to inflammation, medications, alcohol, or fatty liver.
Low Value
Low values generally have no clinical significance.
Reference ranges are typical guide values for adults and vary depending on the laboratory, measurement method, age and sex — always compare with the range stated on your own report. A value outside the range does not automatically mean an illness, and a value within the range does not rule one out. The trend and overall picture are usually more informative than a single value. The doctor's assessment is always decisive.