Glucose, Blood

CERNER / EPIC MNEMONIC: GLU; BG/GLU
POE DESCRIPTION: GLUCOSE; FBS
CPT CODE: 82947
DAYS PERFORMED: Specimen accepted daily, 24 hours
TURNAROUND TIME: Routine: 8 hours; stat: 1 hour; Blood Gas Laboratory: 15 minutes
CONTAINER TYPE:

SSTTM tube or heparinized syringe (Blood Gas Laboratory);  gray (if transport is delayed)

SPECIMEN REQUIREMENTS: Blood (serum or plasma)
MINIMUM VOLUME: 4 mL blood (2 mL serum or plasma)
HANDLING INSTRUCTIONS: Draw in gray top tube if transport of specimen will be delayed. Glucose will drop 5-10 mg/dL/hour in unseparated, room temperature blood if no preservative has been added. SSTTM tubes should be centrifuged as soon as possible after collection. Refrigerate.
REFERENCE RANGE: Interpretive Information:FASTING (>8 hours) 60-99 mg/dL Normal 100-125 mg/dL Potentially indicative of impaired fasting glucose (IFG). Requires confirmation on subsequent day. >126 mg/dL Potentially indicative of diabetes mellitus. In absence of symptoms of unequivocal hyperglycemia, requires confirmation on subsequent day.NON-FASTING >200 mg/dL Potentially indicative of diabetes mellitus. In absence of symptoms of unequivocal hyperglycemia, requires confirmation on subsequent day.

Reference: Diabetes Care, 30(Supp. 1), S42-S47 (2007).

CRITICAL VALUES:

≤ 40, ≥ 500

TEST SYNONYM(S):Blood Sugar; Fasting Blood Sugar; FBS; Sugar