Quick Reference
- Full form
- Alanine Aminotransferase
- Sample type
- Blood
- Fasting
- Not required
- Marker measured
- 1
- Report turnaround
- Same day
- Available at
- All locations
About ALT (SGPT)
ALT, also called SGPT, is one of the most sensitive markers of liver cell health. It is often the first thing to rise when the liver is under stress, whether from fatty liver, viral hepatitis, or certain medications.
No fasting is strictly required, though a light meal beforehand is preferred. Because ALT is so specific to the liver, doctors often use it alone to monitor patients already diagnosed with a liver condition, without repeating the full LFT panel every time.
How to Prepare
- No fasting required.
- No special preparation needed before your blood draw.
Frequently Asked Questions
What does a high ALT (SGPT) level mean?
It usually points to liver cell stress or damage, commonly from fatty liver, viral hepatitis, or certain medications, though the exact cause needs your doctor's interpretation.
Do I need to fast before an ALT test?
A light meal beforehand is fine; strict fasting is not required for this specific test.
Why is ALT tested alone instead of the full LFT?
Once a liver condition is diagnosed, doctors often track ALT alone as a simpler way to monitor progress without repeating the entire panel each visit.
Can medications affect my ALT level?
Yes, several common medications and supplements can temporarily raise ALT, so tell your doctor about everything you are taking.
How soon will my ALT report be ready?
Same day, usually within a few hours.
Is home sample collection available for ALT testing?
Yes, in all City Care Lab service areas.
This page provides general health information and is not a substitute for medical advice. Speak with your doctor about your specific results and treatment.