What are the normal results for the glucose tolerance test?

If the patient is suspected of diabetes, his / her health care provider can order a glucose tolerance test. During this procedure, blood is taken one more or more times, often after a period of fasting or consumption of sweet beverage. The normal results of the glucose tolerance test vary depending on the type of test. The random glucose test in plasma should usually show glucose levels of less than 200 mg/dl and the plasma test usually has the results of 60 to 99 mg/dl. The result is a test of oral glucose tolerance (OGTT), on the other hand, it varies according to the concentration of the drink used and whether screening for type 2 diabetes or gestational diabetes is.

Before the random glucose test in plasma, no fasting or special diet is required. The patient can usually report messages to the blood collection laboratory at any time of the day that is advantageous. If its blood glucose levels are found to be at 200 mg/dl or larger, it is outside the normal range. Diagnosis of diabetes usually does not occur until the patient is subject to additional tesHowever, tuning, which may include repeated plasma test, plasma test on an empty stomach or OGTT.

Before testing for plasma fasting, the patient must delay or drink something other than a small amount of water for eight hours before blood collection. Stomach blood tests are usually scheduled in the morning to allow fasting during sleep. Normal results for test tolerance of glucose after fasting can be anywhere from 60 to 99 mg/dl; Diabetes is usually not confirmed until two plasma tests on an empty stomach provide more than 126 mg/dl.

OGTT also requires that the patient after disability eight hours after blood collection. After initial blood collection, the patient must drink liquid, which usually contains 75 mg of glucose. The blood is taken once and two hours after consuming the drink. Glucose levels on an on -board should be 60 to 99 mg/dl, which is one -hour level to not more than 200 mg/dl and two -hour level must not exceed 140mg/dl.

pregnant women are usually subject to OGTT to reflect on gestational diabetes, commonly known as a "hourly" test when pregnant is 24 to 28 weeks. After testing, the patient must re -post for eight hours and undergo blood running on an empty stomach. The drink provided to pregnant women generally contains only 50 mg of glucose and blood is taken only an hour after the liquid is used. Normal results for a glucose test for gestational diabetes are below 140 mg/dl. If glucose levels are higher, the patient takes the larger OGTT, called a "three -hour" test.

The three -hour OGTT requires a special high -carful diet for three days before the blood test. Blood collection occurs before receiving a glucose drink and an hour for three hours after. The optimum glucose levels are less than 180 mg/dl in the first hour, below 155 mg/dl at the second hour and at 3 pm not more than 140 mg/dl. None of these numbers at this point suggests that the patient has gestational diabetes.