Bilirubin, Direct and Total, Serum or Plasma
Also known as: BILI
Use
This test is used to measure the levels of bilirubin, a yellow compound found in bile, in the blood. Bilirubin testing is significant for evaluating liver function, diagnosing jaundice, and managing conditions like primary biliary cholangitis and autoimmune hepatitis. It helps in differentiating between disorders causing red blood cell breakdown and those causing impaired liver processing of bilirubin. The test may aid in diagnosing underlying health issues affecting the liver and bile duct systems.
Special Instructions
Protect the sample from light during collection, storage, and shipment. Ensure serum tube clots completely at room temperature before separation. Transfer serum or plasma to an ARUP amber transport tube quickly to maintain integrity.
Limitations
Certain conditions, medications, or improper sample handling can alter bilirubin levels, leading to potential inaccuracies. Bilirubin levels can be affected by hemolysis, lipemia, and exposure to light. Testing does not differentiate the specific cause of liver dysfunction or distinguish between different forms of jaundice in all cases.
New York Approved
Methodology
Other
Biomarkers
LOINC Codes
- 1975-2
- 1968-7
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Plasma
Volume
1 mL
Minimum Volume
0.2 mL
Container
ARUP amber transport tube
Collection Instructions
Collect using a plasma separator tube or serum separator tube. Protect from light. Allow serum tube to clot completely at room temperature. Separate serum or plasma from cells within 2 hours of collection.
Storage Instructions
Keep refrigerated after collection.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 24 hours |
| Refrigerated | 1 week |
| Frozen | 6 months |