How can sgpt be reduced from 100 to 40 within a week

[RGD1]

No other problem in medical test age 28 years mail healthy

[flyinlynn]

SGPT can vary significantly in short periods of time  causes of slightly elevated SGPT (ALT) can be Slightly high ALT levels may be caused by:

Alcohol abuse
Cirrhosis (long-term damage and scarring of the liver)
Mononucleosis
Drugs such as statins, aspirin, and some sleep aids.

Moderately high ALT levels may be because of:

Chronic (ongoing) liver disease
Alcohol abuse
Cirrhosis
Blockage of the bile ducts
Heart attack or heart failure (when your heart can’t pump enough blood to your body)
Kidney damage
Muscle injury
Damage to red blood cells
Heat stroke
Too much vitamin A

So you could have had an extra hard work out then took a lot of Tylenol and maybe an alcohol drink for example which could result in elevated ALT.

For a proper diagnosis of what is causing your temporary increase in ALT should be discussed with your doctor.