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Glucose Tolerance 3 Hour, OB
Test CodeLAB6023
Alias/See Also
GTTOB
CPT Codes
82951,82952x3
Includes
Fasting blood glucose followed by glucose levels drawn at timed intervals after administration of a glucose load (100 g glucose)
Instructions
"Routine venipuncture
Collect fasting blood then administer 100g glucola unless specified by physician
Collect fasting, 1hr, 2hr, and 3hr postglucose administration specimens.
Gray top (sodium fluoride) tube; 4 blood draws"
Collect fasting blood then administer 100g glucola unless specified by physician
Collect fasting, 1hr, 2hr, and 3hr postglucose administration specimens.
Gray top (sodium fluoride) tube; 4 blood draws"
Specimen Stability
Refrigerate
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Insufficient quantity, hemolysis, plasma left on cells overnight, failure to follow specimen requirements
Methodology
Oxygen rate
Setup Schedule
Daily
Report Available
Within 24hrs
Limitations
This test is for Obstetric patients only
Reference Range
"Glucose, Obsetric Fasting 65-95 mg/dL
Glucose, Obstetric 1 Hour 65-180 mg/dL
Glucose, Obstetric 2 hour 65-155 mg/dL
Glucose, Obstetric 3 Hour 65-140 mg/dL
Critical Value is less than 49 or greater than 451 mg/dL for any collection"
Glucose, Obstetric 1 Hour 65-180 mg/dL
Glucose, Obstetric 2 hour 65-155 mg/dL
Glucose, Obstetric 3 Hour 65-140 mg/dL
Critical Value is less than 49 or greater than 451 mg/dL for any collection"
Clinical Significance
Glucose measurements are used in the diagnosis and treatment ofcarbohydrate metabolism disorders including diabetes mellitus, neonatalhypoglycemia, idiopathic hypoglycemia, and pancreatic islet cellcarcinoma.
