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Bilirubin, Direct

Item Value
Approval req'd? No
Available Stat? Yes
Test code BILD
Test group Bilirubin
Performed by Parnassus, Mission Bay & Mt. Zion Chemistry
In House Availability Test available 24 hours per day 7 days per week
Method Spectophotometric (diazo)
Collection Instructions Protect from light.
Container type Gold top or Light Green top
Amount to Collect 1 mL blood Click here for Microdetermination info
Sample type Serum or plasma
Preferred volume 0.5 mL serum or plasma
Min. Volume 0.2 mL serum or plasma Click here for Microdetermination info
Processing notes Protect from light.
Units mg/dL
Normal range
< 1 week <0.9 mg/dL
≥ 1 week <0.3 mg/dL

1. Normal range for neonates 0-1 week adopted from Beckman Coulter's "Pediatric Reference Range Guidelines for Synchron Systems" Bulletin 9345
2. Normal range for adults was determined by testing 271 male and female healthy blood donors at UCSF. Adult range adopted for pediatric patients >1 week.
Synonyms D bili; Conjugated bilirubin; DBIL; Bile
Turn around times STAT 1 hour, Routine 4 hours
Additional information To convert mg/dL to µmol/L (SI units) multiply by 17.1. Moderate hemolysis may artifactually decrease the result, whereas severe hemolysis may increase the result.
CPT coding 82248
LOINC code 34543-9
Last Updated 1/28/2015 9:42:45 AM
Entry Number 118
Lab Procedure Link Click here for Procedure
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