SGPT / ALT

Also known as: ALT, Alanine Aminotransferase, SGPT

Liver & Digestive Health Blood
Patient Friendly Summary

Picture liver cells as little factories; SGPT in blood means some factories are leaking. Mild leaks from fatty liver usually heal with weight loss, exercise, and avoiding alcohol.

What this test means

SGPT (ALT) lives mainly inside liver cells. When the liver is irritated — by fat, viruses, alcohol, or medicines — the enzyme leaks into the blood and the value rises.

Why it is done

It is done within liver function tests for fatigue, jaundice, fatty liver follow-up, alcohol-related checks, and medicine safety monitoring.

Understanding your value

If your value is high

High SGPT can be seen in fatty liver (very common), viral hepatitis, alcohol effects, and as a side effect of some medicines.

If your value is low

Low values are normal and not significant.

About the normal range

Many labs use roughly 7–40 U/L. Mild elevations (1–2× upper limit) are commonly from fatty liver and improve with lifestyle change.

When to consult a doctor

Consult your doctor for persistently raised values, and promptly if you have yellowing of eyes, dark urine, or severe abdominal pain.

Frequently Asked Questions

It is done within liver function tests for fatigue, jaundice, fatty liver follow-up, alcohol-related checks, and medicine safety monitoring. Your doctor will decide if this test is right for your situation.

High SGPT can be seen in fatty liver (very common), viral hepatitis, alcohol effects, and as a side effect of some medicines. This needs clinical correlation — always discuss your report with your doctor.

Low values are normal and not significant. This needs clinical correlation — always discuss your report with your doctor.

A single value rarely tells the whole story. Results need to be read together with your symptoms, history, and other tests. Please consult your doctor for a proper interpretation.

Quick Facts

  • TestSGPT / ALT
  • Short formsALT, Alanine Aminotransferase, SGPT
  • Sample typeBlood
  • CategoryLiver & Digestive Health

Related Terms

Liver Function Fatty Liver High

Specialists

Gastroenterology

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Disclaimer: This information is for patient education only and does not replace medical advice, diagnosis, or treatment. Always consult a qualified doctor.