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General Information:

 

Web Links:

Mayo Clinic Laboratories

Test Code GTT2 2 Hour Glucose Tolerance

Important Note

To schedule an appointment for the GTT to be collected at The Valley Health System - Ridgewood Campus Outpatient Laboratory call 201-447-8232.

Test performed Monday to Friday only. 

Patient must be NPO after midnight

Specimen Requirements

Container/Tube: Grey-top (potassium oxalate/sodium fluoride) tube(s)

Specimen Volume: 1 mL of plasma for each timed interval

Collection Instructions: Patient should be fasting at least 8 hours or an overnight (12-14 hour) fast. Collect specimen as follows:

1. Draw blood specimen for a fasting glucose.

2. After fasting specimen draw, give patient a 100 g dose of GlucolaTM (patient must drink entire beverage within 5 minutes).

3. Draw blood at hourly intervals until desired length of procedure is completed.

Note: Label specimens appropriately (include corresponding draw times).

 

Specimen Transport Temperature

Ambient

Performing Laboratory

The Valley Hospital