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Direct Bilirubin
Test CodeLAB52
Alias/See Also
BILD; Bilirubin Direct
CPT Codes
82247, 82248
Includes
Bilirubin Total, Bilirubin Direct
Instructions
Routine venipuncture.
Separate serum or plasma from cells as soon as possible (centrifuge specimen) and send to the lab within 4 hours of collection.
Bilirubin is photosensitive. Protect samples from light
Separate serum or plasma from cells as soon as possible (centrifuge specimen) and send to the lab within 4 hours of collection.
Bilirubin is photosensitive. Protect samples from light
Specimen Stability
Refrigerate, stable 48 hours; stable 8 hours at room temperature; stable >48 hours if frozen.
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Insufficient quantity; gross hemolysis; gross lipemia (not corrected by airfuge); failure to follow stability requirements; prolonged exposure to light
Methodology
Spectrophotometric without blank
Setup Schedule
Daily/STAT
Report Available
"Within 24 hours
STAT: within 1 hour"
STAT: within 1 hour"
Reference Range
"Bilirubin Total: 0.2-1.3 mg/dL Age 1 Month - adult,
Bilirubin Direct: 0.0-0.4 mg/dL "
Bilirubin Direct: 0.0-0.4 mg/dL "
Clinical Significance
Direct bilirubin measurements are used in the diagnosis and treatment of liver, hemolytic, hematological, and metabolic disorders, including hepatitis and gallbladder block.
