Liver enzymes are proteins in your liver that speed up chemical reactions. If your liver is damaged, blood tests will show abnormally high levels of these enzymes circulating in your bloodstream.

Alanine aminotransferase (ALT) is an enzyme that appears mostly in the liver. Having high levels of ALT may be a sign of liver disease. While ALT can also be found in the kidneys, heart, and muscle ...

TAMPA, Fla. (WFLA) — Whenever you get bloodwork done, you probably don’t know what exactly you’re supposed to be looking at on the sheet (unless you’re a healthcare provider, that is). Glucose, sodium ...

Mark Gurarie is a writer covering health topics, technology, music, books, and culture. He also teaches health science and research writing at George Washington University's School of Medical and ...