What Not To Eat Before a Glucose Test?
If you are going to have a three-hour glucose test, then it is better to make sure that your blood sugar level does not get too high during the day before the test. If you do not want to risk getting hypoglycemic (low blood sugar), then eating something like:
A slice of whole wheat bread with butter or margarine. A piece of fruit such as banana or apple. A cup of coffee.
These foods will keep your blood sugar levels from rising too much during the day. You may need to take some insulin before these foods so that they do not cause a rise in blood sugars. However, you should avoid eating too many carbs at one time because this could lead to a spike in blood sugars which would result in failure of the test.
You can read more about how to pass your three-hour glucose test here.
How to Pass Your Three-Hour Glucose Test?
The best way to pass a three-hour glucose test is to consume plenty of carbohydrates before the test. Eating too little carbohydrate will result in failure of the test. You will probably be asked to fast overnight (not to consume anything). After an overnight fast, your blood sugar level will probably be low. You will then be given a glucola beverage to drink within five minutes. The glucola tastes sweet and contains 75 grams of carbohydrate. If you do not absorb the glucose properly, then you may get hypoglycemic during the test and will fail it because you will not be able to concentrate well enough.
The three-hour glucose test works by having the patient drink a very sweet solution of glucose and then testing their blood sugar level every hour after that. If the patient’s blood sugar is above 200 mg/dL after two hours then the patient has failed the test. If the blood sugar is between 70 to 140 mg/dL at any time during the test then it is an indication that you are becoming diabetic and will also fail. If the blood sugar falls below 70 mg/dL then this is an indication that your body is not properly absorbing the glucose and that you will also fail the test.
This means that it is absolutely vital that you consume ample carbohydrates before the test. You should eat a normal breakfast early in the morning (at least 2 hours before the test). Then you can have snacks containing more carbs up to an hour before the test.
Sources & references used in this article:
Prehepatic secretion and disposal of insulin in obese adolescents as estimated by three-hour, eight-sample oral glucose tolerance tests by JA Vogt, C Domzig, M Wabitsch… – American Journal of …, 2016 – journals.physiology.org
… and normoinsulinaemic hypoglycaemia in uncontrolled type 2 diabetes mellitus: clinical usefulness of 3 h assessment in the 75 g oral glucose tolerance test by S Sugiyama, H Jinnouchi, K Hieshima… – Case Reports, 2014 – casereports.bmj.com
Emotion regulation deficits and three-hour ambulatory cardiovascular activity in generalized anxiety disorders by JC Levine – 2011 – search.proquest.com
Effect of Oral Lipids on Blood Glucose by TR Knisley – 2013 – digitalcommons.calpoly.edu
Gestational diabetes by BA Sullivan, ST Henderson, JM Davis – Journal of the American …, 1998 – Elsevier
Head it off at the pass by C Young – cecity.com
Hormonal regulation of chicken intestinal NHE and SGLT-1 activities by MC De La Horra, M Cano, MJ Peral… – American Journal …, 2001 – journals.physiology.org
Uncoupling sweet taste and calories: comparison of the effects of glucose and three intense sweeteners on hunger and food intake by PJ Rogers, JA Carlyle, AJ Hill, JE Blundell – Physiology & behavior, 1988 – Elsevier
Interdisciplinary communication in a literature and medicine course: Personalizing the discourse of medicine by K Welch – Technical Communication Quarterly, 2000 – Taylor & Francis
