Reducing ALT or AST level is not possible in most cases, as elevated ALT levels normally indicate liver damage and elevated AST levels indicate tissue damage or damage to an organ such as the brain or heart, states WebMD... More » Health Medical Ranges & Levels

Elevated ALT and AST levels may indicate hepatitis A, B or C, heart failure or nonalcoholic fatty liver disease, according to Mayo Clinic. Additional causes include drinking alcohol or taking medications such as statins ... More » Health Medical Ranges & Levels

"AST" stands for "aspartate aminotransferase," one of the liver enzymes, according to Lab Tests Online. High levels of AST in the blood usually indicate acute liver damage, hepatitis, chronic liver disease or another typ... More » Health Diagnostics & Imaging
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Low levels of ALT and AST are commonly found in adult blood tests and are normal for most people. These lower levels are good because they indicate that the liver, heart, pancreas and kidneys are functioning properly and... More » Health Medical Ranges & Levels

Normal levels on ALT blood tests range from 10 to 40 international units per liter, while scores between 10 and 34 international units per liter are normal for AST tests, states MedlinePlus. The tests measure the amount ... More » Health Medical Ranges & Levels

Causes of elevated aspartate aminotransferase, or AST, levels include a heart attack; liver, kidney or lung damage; medicines; high doses of vitamin A; and mononucleosis, states WebMD. Normal levels for adult women and m... More » Health Medical Ranges & Levels

Normal ranges for ALT liver tests are 7 to 55 units per liter and 8 to 48 units per liter for AST, states Mayo Clinic. These ranges are established for adult men and may differ with women and children. Normal ranges may ... More » Health Medical Ranges & Levels