Bilirubin, Total and Direct

CPT: 82247; 82248
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Test Details

Synonyms

  • Bilirubin, Total, Conjugated, and Unconjugated

Test Includes

Bilirubin, conjugated (direct); bilirubin, indirect; bilirubin, total

Use

Liver and biliary tests are useful in the differential diagnosis of jaundice from bilirubin overproduction (hemolysis), decreased uptake (Gilbert disease), decreased conjugation (hepatocellular disease, familial, drug-induced, pregnancy; obstructive bile duct disease).

Methodology

Colorimetric

Specimen Requirements

Specimen

Serum (preferred) or plasma

Volume

3 mL

Minimum Volume

1 mL

Container

Red-top tube, gel-barrier tube, or green-top (lithium heparin) tube

Collection

Separate serum or plasma from cells within 45 minutes of collection.

Storage Instructions

Refrigerate

Stability Requirements

Temperature

Period

Room temperature

2 days

Refrigerated

3 days

Frozen

14 days

Freeze/thaw cycles

Stable x2

Causes for Rejection

Severe hemolysis; improper labeling; severe lipemia

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
001214 Bilirubin, Total/Direct, Serum 001099 Bilirubin, Total mg/dL 1975-2
001214 Bilirubin, Total/Direct, Serum 001222 Bilirubin, Direct mg/dL 1968-7
001214 Bilirubin, Total/Direct, Serum 011247 Bilirubin, Indirect mg/dL 1971-1

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The LOINC® codes are copyright © 1994-2017, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf