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* Bilirubin, Direct

Mnemonic

BIL D

Synonym

Direct Bilirubin - DBILI - DBIL

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 before transport. 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

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

CPT Codes

82248

Last Updated: Wednesday, January 13, 2021 01:55:35 AM


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