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Glucose Tolerance,1hr 75g
MessageTest performed at York Hospital Laboratory.
Test Code
GTT75
Alias/See Also
Glucose, 1-Hour Post-Prandial
Glucose, 1-Hour Postprandial
Glucose, 1-Hour Postprandial
CPT Codes
82950
Preferred Specimen
0.2 mL serum collected in a serum separator tube (SST)
Other Acceptable Specimens
0.2 mL plasma collected in a lithium heparin (green-top) tube
Instructions
The adult patient is given 75g of Glucose, and the specimen is obtained 1 hour later.
Children - give 1.75g per 1kg of ideal body weight, not to exceed 75g.
A meal should be eaten 1 hour prior to drinking the glucose.
No food can be eaten between drinking the glucose and the blood draw.
Children - give 1.75g per 1kg of ideal body weight, not to exceed 75g.
A meal should be eaten 1 hour prior to drinking the glucose.
No food can be eaten between drinking the glucose and the blood draw.
Transport Temperature
Refrigerated
Specimen Stability
Room temperature: 24 hours
Refrigerated: 7 days
Frozen: 1 year
Refrigerated: 7 days
Frozen: 1 year
Methodology
Spectrophotometry
Setup Schedule
Daily
Report Available
Next Day
Reference Range
100-180 mg/dL
Clinical Significance
Simple glucose loading test. Increased results should be confirmed by OGTT.
