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 Vacutainer tube

Pediatric:
0-2 years: 0.5 mL Green top Microtainer
2-10 years: 3 mL Green top tube
Collection Information: Collect blood aseptically in a Vacutainer tube.

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

Fasting levels - no caloric intake for at least 8 hours
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: 2020-11-27
Critical Value: 0-3 Days:
<2 mmol/L or >15 mmol/L
>3 Days:
<2.8 mmol/L or >30 mmol/L
Interpretive Comments: 2018 CDA Updated Diagnostic Criteria for Diabetes:
FPG ≥7.0 mmol/L
Fasting = no caloric intake for at least 8 hours
or
A1C ≥6.5% (in adults)
or
2hPG in a 75 g OGTT ≥11.1 mmol/L
or
Random PG ≥11.1 mmol/L
Random = any time of the day, without regard to the interval since the last meal

Please check the following link for more details: http://guidelines.diabetes.ca/cpg
Special Processing: Li Heparin (green top tube) unspun: stable for 2 hours
Li Heparin (green top tube) spun: stable for 8 hours at room temperature and 24 hours refrigerated.
Na Fluoride (grey top): spun and unspun: stable for 48 hours.
Comments:  
Method of Analysis: Enzymatic rate
Critical Information Required:  
Storage & Shipment:  
System Codes: 
Cerner
GLUR
GLUA (fasting glucose)
 
Referred To:  

Questions? Comments? Contact Laura Gopaul