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Bilirubin, Direct

Tube Type = Mint Green Plasma Separator

Tube Type

Test ID LAB52
EPIC Order BILIRUBIN, DIRECT
CPT Code(s) 82248
Group/Individual Test Individual
Laboratory Core Laboratory
Tube Station Routine 30; STAT 888
Specimen Routine: 1 mL blood/green lithium heparin gel tube. Also acceptable gold SST, orange SST, or red plain tube
Micro: 200 µL blood/mint green top bullet/gold top/red top
Stability Unspun: ≤4 hours recommended
Spun/Separated,
Room Temp:		 2 hours
Spun/Separated,
Refrigerated:		 5 days
Frozen: 3 months
Availability Routine: 24 hrs/day
STAT: Yes
Turnaround Time STAT 1 hr., Routine 2 hrs.
Reference Range
Age: Reference Range (mg/dL)
0-14 days ≤0.60 mg/dL
>14 days ≤0.30 mg/dL
Comments

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Direct Bilirubin is included in Hepatic Function Panel

Reviewed by J. Carr on January 12, 2026

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514