Liver tests for infectious mononucleosis
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Exam Overview
Liver tests are used to study liver function and to determine if the liver is damaged or inflamed. These tests are done on a blood sample.
Indicators of liver function
- Bilirubin
- Albumin
- Prothrombin time
Indicators of liver damage or inflammation (liver enzyme studies)
- Alanine aminotransferase (ALT)
- Aspartate aminotransferase (AST)
- Alkaline phosphatase
- Lactate dehydrogenase (LDH)
Why It Is Done
These tests are done when your medical history and the findings of a physical examination suggest that you have a condition (such as a viral infection) that might have affected the liver.
Results
Findings of liver tests may include the following.
Normal
All levels are within normal range.
Abnormal
Abnormal liver function tests indicate that the liver is inflamed or is not functioning normally.
Elevated enzyme levels indicate liver inflammation (hepatitis), which may be a clue that a viral infection is present.
What To Think About
Elevated liver enzymes may be due to many causes other than mono, including other viral infections (such as hepatitis B); severe bacterial infection; heart disease; heart attack; bone, muscle, and joint injuries; and certain cancers. Therefore, liver function tests alone are not a reliable way to confirm a diagnosis of mono.
If your liver enzymes are elevated because of mono, they will return to normal without treatment after the illness goes away.
Complete the medical test information form (PDF) (What is a PDF document?) to help you prepare for this test.
Credits
| Author | Debby Golonka, MPH |
| Editor | Susan Van Houten, RN, BSN, MBA |
| Associate Editor | Pat Truman, MATC |
| Primary Medical Reviewer | Michael J. Sexton, MD - Pediatrics |
| Specialist Medical Reviewer | W. David Colby IV, MSc, MD, FRCPC - Infectious Disease |
| Last Updated | September 19, 2007 |
| Last updated: | September 19, 2007 |
|---|---|
| Author: | Debby Golonka, MPH |
| Reviewed By: | Michael J. Sexton, MD - Pediatrics, W. David Colby IV, MSc, MD, FRCPC - Infectious Disease |
| Editors: | Susan Van Houten, RN, BSN, MBA, Pat Truman, MATC |
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