ALT (SGPT)

About This Test
ALT is a liver enzyme. When liver cells are irritated or damaged, ALT leaks into the blood. It is one of the most useful markers for liver inflammation due to fatty liver, alcohol, or hepatitis.

Patient Preparation
Fasting not required.

Best Time to Test
Anytime

Tests Included
ALT (SGPT)

Why is it done
Evaluating fatigue, jaundice, right‑upper abdominal pain, or dark urine.
Assessing alcohol use, fatty liver, hepatitis, or medication effects.
Pre‑treatment baseline before certain drugs.
Monitoring known liver disease.
Often included in routine check‑ups to find issues early.