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Glucose, Blood, Fasting

Tube Type

Test ID   LAB81
EPIC Order
CPT Code(s)   82947
Group/Individual Test   Individual
Laboratory   Core Laboratory
Tube Station   Routine: 30, STAT: 888
3 mL blood/serum separator tube/gold top/red top acceptable
200 µL blood/serum separator bullet/gold top/red top bullet acceptable
Unspun: 4 hours (2 hours recommended)
Spun/Separated, Room temperature: 24 hours
Spun/Separated, Refrigerator: 7 days
Spun/Separated, Frozen: 1 year
Availability 24 hr/day
Turnaround Time   STAT 1 hr; Routine 2 hrs
Reference Range Normal: see Table below
<40 mg/dL or >400 mg/dL
<40 mg/dL or >500 mg/dL (Emergency Department)

Diabetics:  Fasting for at least 8 hours recommended

Note: BMP and CMP include glucose; select "fasting" when ordered.  Do not order fasting test separately.

Reference Ranges:  Blood Glucose (Fasting)
Age Ranges (mg/dL)
Premature 21-65
Full Term, 0-1 day 20-110
>1 day - 1 yr 50-80
Child and Adult (Fasting) 70-99

Reference range effective 12/2019; From ADA 2019 Standards of Care.

Reviewed by Christian Cristobal on December 16, 2019

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

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