What is this test?
This laboratory test is performed on a blood sample to measure the levels of conjugated and unconjugated bilirubin. Bilirubin is a pigment made from the breakdown of red blood cells and is excreted into the blood by the liver. Abnormal levels of bilirubin may indicate different problems.
Why is this test performed?
- To evaluate the health of liver
- To determine the cause of jaundice
- To diagnose the following conditions:
- Liver disease such as hepatitis
- Hemolytic anemia
- Blockage of bile ducts
- To monitor the efficacy of treatment.
Q1. How is this test performed?
This test is performed on a blood sample. A syringe with a fine needle is used to withdraw blood from a blood vessel in your arm. The healthcare provider will tie an elastic band around your arm to make the blood vessels swell with blood. This makes it easier to withdraw blood. You may be asked to tightly clench your fist. Once the veins are clearly visible, the area is cleaned with an antiseptic solution and then the needle is inserted into the blood vessel to collect the sample. You will feel a tiny pinprick during the procedure. Blood sample once collected will then be sent to the laboratory.
Q2. Is there any risk associated with this test?
There is no risk associated with the test. However, since this test involves a needle prick to withdraw the blood sample, in very rare cases, a patient may experience increased bleeding, hematoma formation (blood collection under the skin), bruising or infection at the site of needle prick.
Q3. Is there any preparation required before the test?
Inform the doctor about the medications you may be taking. No other specific preparations are usually required before this test.
Normal range:
Total bilirubin: 0.3-1.2 mg/dL
- Interpretation of test results:
- Cause of high total bilirubin:
- Liver cirrhosis
- Anemia
- Transfusion reaction
- Viral hepatitis
- Alcoholic liver disease
- Gallstones
- Gilbert syndrome
- Bile duct obstruction
- Drug reactions.
