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Bilirubin, Direct : 285
Test CodeBILDAU or 285
Alias/See Also
Conjugated Bilirubin
CPT Codes
82248
Instructions
Protect from light by wrapping a spun SST® in foil or transferring serum/plasma to an amber transport vial. Avoid hemolysis.
Transport Container
Preferred Specimen
1 mL serum
Alternative Specimens
Plasma from: Lithium heparin (green-top) tube or Sodium heparin (green-top) tube
Minium Volume
0.5 mL
1 mL serum
Alternative Specimens
Plasma from: Lithium heparin (green-top) tube or Sodium heparin (green-top) tube
Minium Volume
0.5 mL
Transport Temperature
Room temperature.
Specimen Stability
If protected from light:
Room temperature: 24 hours; Refrigerated: 72 hours; Frozen: 90 days
Room temperature: 24 hours; Refrigerated: 72 hours; Frozen: 90 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis, Anticoagulants other than heparin
Methodology
Spectrophotometry
Setup Schedule
Sunday - Saturday
Report Available
1 day
Reference Range
≤0.2 mg/dL
Clinical Significance
Measurement of the levels of bilirubin is used in the diagnosis and treatment of liver, hemolytic, hematologic, and metabolic disorders, including hepatitis and gall bladder obstruction. The assessment of direct bilirubin is helpful in the differentiation of hepatic disorders. The increase in total bilirubin associated with obstructive jaundice is primarily due to the direct (conjugated) fraction. Both direct and indirect bilirubin are increased in the serum with hepatitis.
Performing Laboratory
med fusion