Bilirubin, Direct, Serum or Plasma
Also known as: BILID
Use
The Bilirubin, Direct test measures the level of conjugated bilirubin in the blood, which is an indicator of liver function. It is used to assess liver diseases, hemolytic conditions, and bile duct obstructions. Direct bilirubin is a form of bilirubin that has been processed by the liver for excretion and is water-soluble.
Special Instructions
Protect the specimen from light during collection, shipment, and storage. Use an ARUP Amber Transport Tube for transferring the serum or plasma. Ensure the serum tube clots completely at room temperature before separating the serum or plasma from the cells.
Limitations
The test results may be affected by hemolysis or improper handling of the specimen. Hemolyzed specimens are unacceptable and should not be used for testing. The light-sensitive nature of bilirubin requires protection from light to maintain sample stability.
New York Approved
Methodology
Automated Analyzer
Biomarkers
LOINC Codes
- 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
Allow serum tube to clot completely at room temperature. Separate serum or plasma from cells within 2 hours of collection.
Storage Instructions
Protect from light during collection, shipment, and storage.
Causes for Rejection
Hemolyzed specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 1 week |
| Frozen | 6 months |