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Glucose Tolerance, 3 Hr

Test Code
GTT3


CPT Codes
82951, 82952 x2

Preferred Specimen
1.0 ml plasma each draw


Instructions
Draw blood in a grey top tube from a fasting patient (12-14 hours). Give patient 75 mg of "glucola" to drink (100mg if pregnant). Redraw patient at 30min., 1hr., 2hr.and 3hr. respectively in grey top tubes. Label tubes with time of draw.


Transport Container
Grey top tube


Transport Temperature
Room Temperature/Refrigerate.


Methodology
Modified Enzymatic

Reference Range
Fasting70-99 mg/dL
30 min74-200 mg/dL
1 hr74-200 mg/dL
2 hr74-140 mg/dL
3 hr74-106 mg/dL


Clinical Significance
This test is used for the routine diagnosis of diabetes in children and the non pregnant adult.




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.