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Glucose Tolerance Test, 2 hour
MessagePatient must fast
Test Code
LAB4002
Alias/See Also
GTT
CPT Codes
82950
Includes
Fasting , 1 hr and 2 hr collection
Preferred Specimen
4.5 ml (600 ul min) Sodium Fluoride (gray)
Minimum Volume
1 ml (200 ul minimum) plasma for each timed collection
Other Acceptable Specimens
Gold SST/ Grey Sodium Fluoride tube
Instructions
Spin PST or SST and send to lab
Transport Temperature
Room temp
Specimen Stability
24 hours room temp, 7 days refrigerated
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Icteric: >30 mg/dL bilirubin, Hemolysis: >500 mg/dL Hemoglobin, Lipemia: >500 mg/dL triglycerides
Methodology
Photometric/Hexokinase
Setup Schedule
Mon-Sun
Performing Laboratory
Piedmont Athens Regional