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Test Code GLU F Glucose Fasting

Clinical System Name

Glucose Fasting

Description

Fasting plasma glucose concentrations and tolerance to a dose of glucose are used to establish the diagnosis of diabetes mellitus and disorders of carbohydrate metabolism. Glucose measurements are used to monitor therapy in diabetics and in patients with dehydration, coma, hypoglycemia, insulinoma, acidosis, and ketoacidosis.

Sample Requirements

Specimen: Whole Blood

Container(s): Gold SST, Dark Green/Sodium Heparin, Red, Gold Microtainer, Lt. Green/Li Heparin Microtainer, or Heparinized Syringe

 

Preferred Vol: 1 mL

Minimum Vol: 0.5 mL

 

Notes:  Fasting for infants is 4 hours, 8 hours for all other ages.  Method is affected by line contamination and hemolysis. Not affected by sodium fluoride.

 

 

 Note 

Processing Instructions

Reject due to: Age of specimen, hemolysis, line contamination

Spin: Y

Aliquot: Y

Temp: 2-8oC

Storage location: Core 5 Chemistry Refrigerator

 

Off-site collection: Avoid hemolysis and line contamination. Spin blood, refrigerate serum or plasma. Method not affected by sodium fluoride.

Stability

 

Specimen Type Temperature Time
Serum or Plasma RT

24 H

Serum or Plasma 2-8oC

 7 D

Serum or Plasma -20oC or -70oC

365 D

 

Availability

STAT Performed TAT
Y 24/7 1 H

 

Performing Laboratory

Seattle Children's Laboratory    

Department

Department: Core Chemistry

Phone Number206-987-2617

 

Reference Range

Age mg/dL
0- 2 D 40 - 90
2 D - 1 M 60 - 105
1 M -18 Y 60 - 105
> 18 Y 65 - 110

 

Methodology

Method: Colorimetric method by Vitros 4600 or Rapidpoint 405

Analytical Volume:  Vitros 4600: 0.02 mL + 0.03 mL dead space

                                     Rapidpoint 405: 0.20 mL

CPT Codes

82947

 

82803

Critical Values

 

Age mg/dL
0- 2 D

≤ 50 or ≥ 300

2 D - 1 M

≤ 50 or ≥ 300

1 M -18 Y

≤ 50 or ≥ 700

> 18 Y

≤ 50 or ≥ 700