Liver Blood Tests Levels and Results Topic Guide

Liver Blood Tests Liver Blood Tests:

Liver blood tests are used to check the levels and function of liver enzymes in the blood called AST and ALT or aminotransferases in the blood. Symptoms of elevated or high liver enzymes in the blood include fever, abdominal pain, poor appetite, itching, and nausea.

Normal levels of liver enzymes in blood are caused by liver diseases caused by drugs, for example, acetaminophen (Tylenol), pain medications, and statins. Less common causes of abnormal levels of ALT or AST levels in the blood are alcoholic and non-alcoholic liver diseases (NASH), hepatitis, and alcoholism.

Normal levels of ALT ranges from about 7-56 units/liter, and 10-40 units/liters for AST. Elevated (high) and low liver enzymes elevated levels of AST and ALT may signify the level of liver damage the person has. A blood sample is sent to the laboratory for measurement. Usually, you doctor will have the results interpreted within a few hours to days.

Liver blood tests are used to check normal, elevated (high), and low blood levels of liver enzymes (AST and ALT or aminotransferases). Symptoms of elevated levels of liver enzymes are fever, abdominal pain, poor appetite, and nausea. Drugs, for example, acetaminophen (Tylenol), pain drugs, and statins caused high levels of liver enzymes. Less common causes are NASH, hepatitis, and alcoholism.

Must Read Articles:

Liver Blood Tests Topic Guide - Visuals

Liver Blood Tests Topic Guide - Medications and Vitamins


atorvastatin Atorvastatin

Atorvastatin is used together with diet to lower blood levels of "bad" cholesterol (low-density lipoprotein, or LDL), to increase levels of "good" cholestero...learn more »

diclofenac Diclofenac

Diclofenac is a nonsteroidal anti-inflammatory drug (NSAID) that is used to treat mild to moderate pain, or signs and symptoms of osteoarthritis...learn more »

fosinopril Fosinopril

Fosinopril is an ACE inhibitor. ACE stands for angiotensin converting enzyme...learn more »

aspirin (oral) Aspirin (oral)

Aspirin is a salicylate (sa-LIS-il-ate) that is used to treat pain, and reduce fever or inflammation.

learn more »

isoniazid Isoniazid

Isoniazid is an antibiotic that fights bacteria...learn more »

carbamazepine (oral) Carbamazepine (oral)

Carbamazepine is an anticonvulsant that is used to treat seizures and nerve pain such as trigeminal neuralgia and diabetic neuropathy. Carbamazepine is also ...learn more »

acetaminophen (oral/rectal) Acetaminophen (oral/rectal)

Acetaminophen is a pain reliever and a fever reducer. There are many brands and forms of acetaminophen available. Not all brands are listed on this leaflet...learn more »