ALT vs AST
When it comes to assessing liver health, two important enzymes that are commonly measured are ALT and AST. These enzymes can be evaluated either through a liver function test or as part of a comprehensive metabolic panel that measures various substances in the body. While both AST and ALT are liver enzymes, there is a difference in their specificity in identifying liver issues.
What Happens During an AST Blood Test?
When undergoing an AST blood test, the process is similar to any other blood test. A healthcare professional, such as a nurse or phlebotomist, will use a needle to draw a blood sample from a vein in your arm. This is a routine procedure that is typically quick and relatively painless.
Unlike some other blood tests, fasting is not usually required for an AST test. However, it is common for an AST test to be ordered alongside other tests that do require fasting for a period of 10 to 12 hours. It is always best to follow any specific instructions provided by your healthcare provider to ensure accurate results.