Test Name: BILIRUBIN TOTAL
EPIC Search Term: LABBILT
Synonyms: TBIL
Preferred Container: 1 x 0.6 mL Green Lithium Heparin with Gel Microtainer
Alternate Container: 1 x 0.6 mL Amber Microtainer with Gel
1 x 1 mL Green Lithium Heparin Tube with Gel
1 x 1 mL Red/Black Serum Separator (SST) Vacutainer
Sample Type: Blood
Specimen Transport: TRANSPORT IMMEDIATELY.
**SPECIMEN MUST BE RECEIVED IN LAB WITHIN 2 HOURS AFTER COLLECTION if maintained at room temperature.**


Causes for Rejection: Grossly hemolyzed samples. Sample exposed to light more than 2 hours.
Interfering Substances: Gross hemolysis
Exposure to light
Testing Frequency: Daily
Expected Turn Around Time: Same day
Clinical Application: Total bilirubin (Bt) measured by the diazo method (J-G assay) inlcudes all forms of bilirubin; unconjugated bilirubin (Bu), mono- and di-glucuronide conjugated bilirubin (Bc), and delta bilirubin (bilirubin fraction covalently bound to albumin).

Following total bilirubin in the post-natal period: Use total bilirubin (Bt) and the
Bhutani Normogram to follow infants in the immedate post-natal period who may be at risk for hyperbilirubinemia instead of Bu and or Bc.


Candidates for Liver Transplantation: Total bilirubin (Bt) should be used instead of measuring Bu and Bc when assessing and qualifying candidates for liver transplantation. The sum of Bu and Bc will typically be less than Bt due to the fact the spectrophotmetric method does not measure delta-bilirubin.

Please view the Test Info sheet in the hyperlink for further details: Bilirubin Test Info Sheet
Methodology: Colorimetric
Reference Ranges: Total Bilirubin
Premature
0-23 Hrs = 1-8 mg/dl
24-48 Hrs = 6-12 mg/dl
3-5 Days = 10-14 mg/dl
Full-Term
0-23 Hrs = 2-6 mg/dl
24-48 Hrs = 6-10 mg/dl
3-5 Days = 4-8 mg/dl
6 Days-1 Mo = No normals available
1 Mo and older = 0.2-1.0 mg/dl
Unit of Measure: MG/DL
Test Performed By: Texas Children's Hospital Pathology Services

Available at TCH Main Campus: 832-824-5152
6621 Fannin, MC 1-2261
Houston, TX 77030-2399

Available at TCH Pavilion for Women: 832-826-7400
6651 S. Main St.
Houston, TX 77030

Available at TCH West Campus: 832-227-1700
18200 Katy Freeway
Houston, TX 77094

Available at TCH Woodlands Campus: 936-267-5200
17600 Interstate 45 South
The Woodlands, TX 77384
Lab Section: Chemistry