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Test Code BILT Bilirubin, Total

Specimen and Container/Tube

Specimen Type: Plasma

Preferred Specimen: Li-Heparin Mint Green Top

Other Acceptable specimens: Serum/Red Top, Serum/Gold Top

Specimen Handling and Transport Instructions

UCMC Onsite Instructions: 

  • Collect specimen per standard collection procedure and send to laboratory immediately. 

 

UCMC Offsite and UC MedLab Outreach Instructions: 

  • Samples should be centrifuged within 2 hours of collection.
  • Centrifuge specimens at >2500 x g for 10 minutes at room temperature.
  • Aliquot sample into plastic transport tube containing a minimum of 0.2 mL of specimen.
  • Samples must be sent room temperature at 15-25oC.

Rejection Criteria

  • Common specimen rejected situations include: incorrect specimen type, insufficient volume, missing or incomplete specimen identifiers, incorrect specimen transport, or specimens outside stability limits. 
  • Specimens that are clotted or grossly hemolyzed.
  • Specimens that were transported unspun/whole blood and draw time is greater than 6 hours.

Reference Values

Test

Age

Sex

Reference Range

Total Bilirubin

< 24 Hours

All

1.0 - 6.0 mg/dL

 Total Bilirubin

24 - 48 Hours

All

2.0 - 8.0 mg/dL

 Total Bilirubin

3 - 5 Days

All

4.0 - 12.0 mg/dL

 Total Bilirubin

 6 - 14 Days

All

0.6 - 7.0 mg/dL

Total Bilirubin

> 14 Days

All

0.1 - 1.0 mg/dL

 

Critical Values

Analyte

Unit

Low

High

Age

Total Bilirubin

mg/dL

N/A

>18.0

0-14 Days

CPT Codes

82247

LOINC Codes

1975-2

Volume

Preferred Volume: 0.5 mL

Minimum Volume: 0.2 mL

Specimen Stability

Storage Temperature

Stability

Room temperature

1 day

Refrigerated

7 days

Frozen

6 months

Collection Instructions

Collect specimen per standard laboratory collection procedures. 

 

Test Components

Total Bilirubin

 

Unconjugated Bilrubin (BU) is a calculation of Total Bilirubin (TBIL) minus the Conjugated Bilirubin (BC).

Clinical Indications

Measurements of bilirubin are used in the diagnosis of liver disease, in the detection of hemolytic anemia, and to evaluate degrees of jaundice.

Methodology

Colormetric Diazo Method (Roche Diagnostics)

Additional Information

Results should always be assessed in conjunction with patient's medical history, clinical examination and other
findings.

 

Also included in Bilirubin Panel; BILN order code

 

Cyanokit (hydroxocobalamin) at therapeutic concentrations causes significantly lower results. Results from certain multiple myeloma patient samples may show a positive bias in recovery. Not all multiple myeloma patients show the bias and the severity of the bias may vary between patients.

Turnaround Time

Turnaround times are relative to the time the specimen is received in the test laboratory. 

 

STAT Turnaround Time: 1 hour

Routine Turnaround Time: 4 hours

Testing Schedule: 24/7

Synonyms/Keyword Search

NBIL

Last Review Date

8/19/2024