3-hour Oral Glucose Tolerance Test Patient Instructions

  • Do not restrict carbohydrate intake for the 3 days prior to the test.
  • Do not eat for 12 hours prior to the test. You may have water.
  • On the day of the test, you will be given a sugar-containing solution to drink.
  • Your blood sugar will be measured every hour to monitor your body’s response to sugar.


Dr. Al-Karadsheh, MD

Dr. Michaelis, MD

Dr. Tung, MD


Dr. Ouais, MD

Dr. Mittadodla, MD

Dr. Lee, MD

Dr. Koshy, MD


Main Campus

10837 Katy Freeway, Suite 200
Houston, TX 77079
Ph: 713-491-2064
Fax: 713-468-2289



Greater Heights Campus

1631 N. Loop West Ste. 625
Houston, TX 77008
Ph: 832-219-9930
Fax: 832-218-7402



Methodist West Campus

18300 Katy Freeway Suite 465
Houston, TX 77094
Ph: 713-714-3402
Fax: 844-873-0032