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* Bilirubin, Fractionated

Mnemonic

BITD

Synonym

Bilirubin Direct and Total

Includes

Bilirubin, Direct and Total

Specimen Collection Requirements

Collect

Serum or Plasma, one 5.0 mL gold (SST), 7.0 mL red or 3.0 mL mint green (lithium heparin, PST) top tube

Handling

Allow serum to clot completely at room temperature (minimum: SST - 30 minutes and red top tubes - 60 minutes). Separate serum or plasma from cells within 4 hours of collection. PROTECT FROM EXTENDED LIGHT EXPOSURE.

Preferred Volume

1.0 mL Serum/Plasma

Minimum Volume

0.25 mL Serum/Plasma (0.60 mL minimum whole blood draw) 

Transport

Refrigerated (2-8°C)

Rejection Criteria

Grossly hemolyzed specimens

Stability

AFTER SEPARATION FROM CELLS: Room Temperature (18-26°C): 24 hours; Refrigerated (2-8°C): 3 days; Frozen (≤ -20°C): 1 month

Testing Information

Performed

7 days/week

Reported

24 hours

Method

Colorimetry

Reference Values

Reference Values

Critical Values

Comments

Metabolites of acetaminophen (N-acetyl-p-benzoquinone imine) will generate erroneously low results in samples of patients that have taken toxic doses of acetaminophen.

 

Refer to specific tests for other interferences.

CPT Codes

82247, 82248

Last Updated: Wednesday, January 13, 2021 01:56:35 AM


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