Glucose tolerance test – What is it for?

Synonyms

Sugar stress test oGGT (oral glucose tolerance test)

What is the glucose tolerance test?

The glucose tolerance test is also called the sugar stress test. In this test, a certain amount of glucose (sugar) is absorbed into the body via a drinking fluid. Subsequently, it is determined to what extent the body can independently lower the blood sugar again to normal values. In this way, disturbances in blood sugar utilization (glucose utilization) can be detected. The test is therefore mainly used in the early diagnosis of diabetes, but also as a screening test during pregnancy.

When is the glucose tolerance test performed?

The German Diabetes Society (DDG) recommends the glucose tolerance test as a screening method in the presence of certain risk factors. These risk factors indicate Nahe that a disturbed blood sugar utilization could be present. They are listed below: Obesity (BMI >27 kg/m2) and lack of exercise High blood pressure (≥ 140/90 mmHg) Elevated blood lipid values Conspicuous fasting blood sugar value (100 to 125 mg/dl) Conspicuous urine findings with the occurrence of proteins (albuminuria) Diabetes mellitus 2 in a first-degree relative

  • Overweight (BMI >27 kg/m2) and lack of exercise
  • High blood pressure (≥ 140/90 mmHg)
  • Elevated blood lipid values
  • Conspicuous fasting blood sugar value (100 to 125 mg/dl)
  • Conspicuous urine findings with occurrence of proteins (albuminuria)
  • Diabetes mellitus 2 in a first-degree relative
  • During pregnancy to exclude gestational diabetes (pregnancy-associated diabetes): In case of elevated fasting blood glucose levels, in case of gestational diabetes in the past, in case of birth of a >4kg child

When should the glucose tolerance test not be performed?

The test should not be performed if the following factors are present: known diabetes mellitus fever cold liver inflammation such as hepatitis conspicuous urine findings: ketone bodies in the urine (ketonuria) conspicuous blood: hyperacidity of the blood, low pH

  • Known Diabetes Mellitus
  • Fever
  • Common cold
  • Inflammation of the liver like hepatitis
  • Conspicuous urine findings: Ketone bodies in the urine (ketonuria)
  • Abnormal blood: hyperacidity of the blood, decreased pH