Bilirubin, Total and Direct

TEST: 001214
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CPT: 82247; 82248
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Synonyms

  • Bilirubin, Total, Conjugated, and Unconjugated

Test Includes

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

Expected Turnaround Time

Within 1 day

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Related Documents

Specimen Requirements

Specimen

Serum (preferred) or plasma

Volume

3 mL

Minimum Volume

1 mL (Note: This volume does not allow for repeat testing.)

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

Test Details

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

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
001214 Bilirubin, Total/Direct, Serum 34543-9 001099 Bilirubin, Total mg/dL 1975-2
001214 Bilirubin, Total/Direct, Serum 34543-9 001222 Bilirubin, Direct mg/dL 1968-7
001214 Bilirubin, Total/Direct, Serum 34543-9 011247 Bilirubin, Indirect mg/dL 1971-1

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The LOINC® codes are copyright © 1994-2021, 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