Laboratory Test Information Guide

Details for Glucose, Plasma

Test Name: Glucose, Plasma
Alternate Name(s): Random Glucose
Fasting Glucose
Laboratory: Core
Specimen Type: 4.5 mL Green top Vacutainer tube
4.5 mL grey top tube
0-2 yrs: Green top Microtainer (BD 365985)
2-10 yrs: 3 mL Green top
Collection Information: Collect blood aseptically in a Vacutainer tube.

Minimum volume required for a pediatric sample is 0.2 mL
Test Schedule: As required
Turnaround time from when specimen
is received in testing laboratory:
4 hours
1 hour
Reference Range: Random
< 1 year
2.6-11.0 mmol/L
> 1 year
3.4-11.0 mmol/L

Fasting levels - an overnight 10 hour fasting is recommended for fasting glucose
3 years - 16 years:
2.8-6.1 mmol/L
Adult (greater than 16 years):
3.9-6.1 mmol/L
Effective Date: 2008-11-15
Revised Date: 2014-03-20
Critical Value: <3.0 mmol/L or >30 mmol/L
Interpretive Comments: 2013 CDA Updated Diagnostic Criteria for Diabetes: FPG ≥ 7.0 mmol/L or A1C ≥ 6.5% (in adults) or 2hPG in a 75-g OGTT ≥ 11.1 mmol/L or Random PG ≥ 11.1 mmol/L.
Please check the following link for more details:
Special Processing: Li Heparin (green top tube) unspun: stable for 2 hours
Li Heparin (green top tube) spun: stable for 8 hours a room temperature and 24 hours refrigerated.
Na Fluoride (grey top): spun and unspun: stable for 48 hours.
Method of Analysis: Enzymatic rate
Critical Information Required:  
Storage & Shipment:  
System Codes: 
Referred To:  

Questions? Comments? Contact Laura Gopaul