The normal range for an alanine aminotransferase, or ALT, test is 10 to 40 units per liter for men. For women, the normal range is between 7 and 35 units per liter, says WebMD. More »

The substance alanine aminotransferase, or ALT, appears in a blood test in higher amounts when the liver is damaged, according to WebMD. Low levels of ALT are normally found in the bloodstream even with a perfectly funct... More » Health Diagnostics & Imaging

Normal ALT results should range from 7 to 55 U/L, according to Mayo Clinic. This range may differ slightly across the age and gender of patients and the laboratory of analysis and may be affected by certain foods and med... More » Health Diagnostics & Imaging

Alanine aminotransferase, or ALT, is an enzyme found concentrated in the liver and in small amounts in the kidneys and the heart, states WebMD. An ALT test checks the blood for this enzyme, as its presence indicates pote... More »

The normal range for the AST (aspartate aminotransferase) enzyme in adult men is roughly 5 to 40 units per liter, while the ideal range for ALT (alanine aminotransferase) is 7 to 56 units per liter of serum. Normal test ... More »

Normal liver enzyme ranges for aspartate aminotransferase, or AST, are between 10 and 40 units per liter, while normal ranges for alanine aminotransferase, or ALT, are between 7 and 56 units per liter, according to eMedi... More »

The normal range for a blood amylase test is 25 to 125 units per liter, or 0.4 to 2.1 microkatals per liter, for adults age 60 and younger, according to WebMD. For adults older than 60, normal amylase levels are 24 to 15... More »