Glucose, Whole Blood

Abbrev Code:GLUW   
Order Code:LAB3507Order Name:Glucose Whole Blood
Methodology:Amperometric electrode
CPT Codes: 82947 x1
Turnaround Time:Performed and reported 24 hours/day.
Special Instructions:Glucose will decrease 5-10 mg/dL/hour in an unprocessed tube as a result of glycolysis.

Collection Instructions

Optimal Volume:1 mL
Minimum\Peds Volume:0.2 mL (tuberculin syringe)
Container:Dry heparin syringe
Alternate Containers: Capillary (lithium heparin) gas tube, Green (lithium heparin, no gel), Green (lithium heparin, gel)
Collection Instructions:Must be delivered to the laboratory within 2 hours of collection. Plasma samples are acceptable if processed within 2 hours of collection.

Processing and Shipping

Specimen Processing:Whole blood. Do not process. Do not store.
Test Performed at or Referral Lab Chemistry  (CSC Mpls, Northland, UMMC East Bank, UMMC West NICU, UMMC West Satellite, UMMC/UMMCH-West Bank)


Critical Range:
0 - 71 h Less than 40 or greater than 200 mg/dL
3 d - 5 mo Less than 51 or greater than 200 mg/dL
6 mo and older Less than 51 or greater than 500 mg/dL
 Whole Blood Testing Critical Values and Reference Ranges  
Reference Range:
Fasting glucose is defined as no caloric intake for 8 hours. Casual glucose is defined as any time of day without regard to time since last meal.  Casual glucose range is dependent upon food intake, intravenous fluids and parenteral nutrition.
Age Fasting Casual
0-47 h 40-99 mg/dL 50-139 mg/dL
48 h - 5 mo 51-99 mg/dL 51-139 mg/dL
6 mo & older 70-99 mg/dL 70-139 mg/dL
A fasting glucose greater than 126 mg/dL or a casual plasma glucose greater than 200 mg/dL, if confirmed on a subsequent day, meets the threshold for the diagnosis of diabetes, and precludes the need for a glucose challenge.
Whole Blood Testing Critical Values and Reference Ranges

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