Test Code 3GTTOB OB Glucose Tolerance 3 Hour
Methodology
Enzymatic with hexokinase
Performing Laboratory
Sky Lakes Medical Center-Chemistry
Specimen Requirements
Consult physician for specific orders. Patient should be
instructed to eat and drink nothing except water for 10 to 14 hours
prior to test. Patient should be instructed to refrain from smoking
and drinking coffee just before and during test.
Specimen Type:< Plasma
Container/Tube: Green top (lithium heparin gel)
Specimen Volume:1 mL
Collection Instructions:
1. Draw blood specimen for a fasting glucose.
2. Give patient 100g of Glucola.
3. Draw a 1 hour specimen post dose.
4. Draw a 2 hour specimen post dose.
5.Draw a 3 hour specimen post dose.
6. Label all specimens appropriately with patient’s full
name and date of birth and corresponding draw times and
intervals.
6. Spin down within 45 minutes of draw. Avoid prolonged contact of
plasma with separated red cells; or hemolyzed, icteric, or lipemic
specimen.
Specimen Transport Temperature
Refrigerate/Ambient OK
Reference Values
Glucola Dose: 100 grams
Fasting Glucose: <95 mg/dL
1-Hour Post Glucola: <180 mg/dL
2-Hour Post Glucola: <155 mg/dL
3-Hour Post Glucola: <140 mg/dL
Day(s) Test Set Up
Monday through Sunday
Test Order Code
LAB1230115
Test Classification and CPT Coding
82951, 82952