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Glucose Tolerance 1 Hour
Test CodeGLU1P50
Alias/See Also
GTT
CPT Codes
82950
Preferred Specimen
GREEN Lithium Heparin Plasma
Minimum Volume
0.25 mL
Other Acceptable Specimens
SST Serum Separator, Red No Gel
Instructions
Separate from cells within 1 hours of collection
Transport Container
GREEN Lithium Heparin
Transport Temperature
Room Temperature
Specimen Stability
Room Temp: 24 Hours; Refrigerated: 7 Days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Not separated from cells within 1 hours of collection, gross hemolysis
Methodology
Vitros 7600/3400
Reference Range
A GLUCOSE RESULT OF > OR = 130 MG/DL WILL IDENTIFY 90% OF WOMEN WITH GESTATIONAL DIABETES MELLITUS (GDM). A VALUE OF > OR = 140 MG/DL WILL IDENTIFY APPROXIMATELY 80% OF WOMEN WITH GDM, BUT WITH GREATER SPECIFICITY (FEWER FALSE POSITIVE RESULTS). A 3 HOUR ORAL GLUCOSE TOLERANCE TEST FOR GDM IS RECOMMENDED FOR DEFINITIVE DIAGNOSIS.
Clinical Significance
A value >130 mg/dL or greater indicates the need for a full diagnostic, gestational glucose tolerance performed in the fasting state to determine if the patient has gestational diabetes.
Performed By
RFGH Laboratory
Performing Laboratory
RFGH Laboratory
