Sign in →

Test Code PEDBC Bilirubin, Conjugated, Pediatric

Important Note

This order is for Pediatric samples ONLY.

Specimen and Container/Tube

Specimen Type: Plasma

Preferred Specimen: Li-Heparin Mint Green Top

Other Acceptable specimens: Red Top, Gold Top

Specimen Stability

Specimen Type

Storage Temperature

Stability
Serum

Room temperature

2 days

Refrigerated

7 days

Frozen (-70°C)

3 months
Plasma

Room temperature

2 days

Refrigerated

7 days

Frozen (-15 - -25°C)

6 months

Collection Instructions

Collect specimen per standard laboratory collection procedures. 

 

Specimen Handling and Transport Instructions

UCMC Onsite Instructions: 

  • Collect specimen per standard collection procedure and send to laboratory immediately. 
  • Protect specimen from light during handling and transport 

 

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.
  • Protect specimen from light during handling and transport 

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

Bilirubin, Conjugated

<14 Days

All

0.0 - 0.6 mg/dL

Bilirubin, Conjugated

≥14 Days ≤18 Years

All

0.0 - 0.3 mg/dL

 

Test

Age

Sex

Reference Range

Bilirubin, Unconjugated

<24 hours

All

1.0 - 6.0 mg/dL

Bilirubin, Unconjugated

24 - 48 hours

All

2.0 - 8.0 mg/dL

Bilirubin, Unconjugated

3 - 5 Days

All

4.0 - 12.0 mg/dL

Bilirubin, Unconjugated

6 - 14 Days

All

0.6 - 7.0 mg/dL

 

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

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

Clinical Indications

Evaluation of jaundice and liver functions.

Methodology

Vanadate Oxidation (Randox)

CPT Codes

82248

LOINC Codes

15152-2

Synonyms/Keyword Search

DBIL, BILD, BILC, Direct Bilirubin, PedBC, PDSTLP

Last Review Date

6/5/2025

Volume

Preferred Volume: 0.5 mL

Minimum Volume: 0.2 mL

Critical Values

Not applicable 

Test Components

Conjugated Bilirubin for Pediatric Patients

Additional Information

  • Results should always be assessed in conjunction with patient's medical history, clinical examination and other findings.
  • For Non-Pediatric orders use code BC
  • Grossly hemolyzed specimens inhibit the diazo reaction and falsely low conjugated bilirubin results may be seen.

Related Tests