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Test Code BILITDI Bilirubin, Total and Direct

Additional Codes

LAB168

Performing Laboratory

Central Peninsula Hospital

Important Notes

Protect from light

Collection Method

Venipuncture

Container

Lt Green / Plasma Separator / Lithium Heparin

 

Specimen Type

Preferred

  • Plasma- Light Green Top

 

Acceptable

  • Serum- Gold Top SST or Red Top

Minimum Volume

1ml

Specimen Stability

 

Total Bilirubin

Ambient 1 day
Refrigerated (4°C to 8°C) 7 days
Frozen(-40°C to 0°C) 6 months

 

Direct Bilirubin

Ambient 2 days
Refrigerated (4°C to 8°C) 7 days
Frozen(-40°C to 0°C) 6 months

Reference or Target Ranges

Total Bilirubin

Age Male Female
0 - 7 days 0.2 - 12 0.2 - 12
8 days - 1 month 0.2 - 10 0.2 - 10
> 1 month 0.2 - 1.2 0.2 - 1.2

Direct Bilirubin

Age Male Female
< 1 month 0.1 - 0.6 0.1 - 0.6
> 1 month 0.1 - 0.3 0.1 - 0.3

Indirect Bilirubin

Age Male Female
< 1 month 0.6 - 10.5 0.6 - 10.5
> 1 month 0.0 - 1.1 0.0 - 1.1

Indirect bilirubin (mg/dL) = Total bilirubin (mg/dL) - Direct bilirubin (mg/dL)

 

Reportable Units

mg/dL

Critical Value

Total Bilirubin

0 days old-1 month old ≥ 15.0 mg/dL

 

Direct Bilirubin 

Not defined for this assay

 

Reasons for Rejection

 

Total Bilirubin

Hemolysis Threshold 1000 mg/dL
Icterus Threshold N/A
Lipemia Threshold 1000 mg/dL
Other QNS, contaminated, improperly labeled, improper specimen type, not protected from light

 

Direct Bilirubin

Hemolysis Threshold 30 mg/dL
Icterus Threshold N/A
Lipemia Threshold 100 mg/dL
Other QNS, contaminated, improperly Labeled, improper specimen type, not protected from light

 

Performance Information

Days and Time Performed 24/7
Expected Turn Around Time Stat: 1 hour
Routine: 4 hours
Stat Availability Yes
Performing Bench CPH Chemistry
Methodology/Method Description Roche Cobas

Panel Components

  • Total Bilirubin
  • Direct Bilirubin
  • Indirect Calculation

CPT Codes

82248, 82247

Last review/edit date

2025

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