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

Protect from Light

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