Glucose after 75g glucose – 3h measurement

The test is performed using a blood sample to determine the glucose level 3 hours after consuming 75g of glucose.

This test is part of the glucose tolerance curve (oral glucose tolerance test – OGTT).

Glucose level measurements after glucose intake are used in diagnosing patients with carbohydrate metabolism disorders (diabetes, neonatal hypoglycemia, idiopathic hypoglycemia). It is also recommended for preventive screenings, annual check-ups for at-risk patients, and pregnant women.

An increase in glucose levels is observed in:

• diabetes,
• pituitary and adrenal gland dysfunctions,
• pancreatic diseases,
• dialyzed patients,
• pregnancy.

A decrease in glucose levels occurs in:

• insulin overdose,
• overdose of oral antidiabetic drugs,
• hormonal insufficiency of the pituitary and adrenal glands,
• inborn metabolic disorders,
• toxic liver damage.

On the day of the test:

• The patient must be fasting – meaning no food intake for approximately 12 hours before the test.
• In the morning, drinking water is allowed – up to one glass.
• If possible, the blood sample should be collected before taking the morning dose of medication, unless instructed otherwise by a physician.
• Prior to the test, the patient should remain at rest for 10–15 minutes (seated position).
• Physical activity, even moderate (e.g. walking, climbing stairs), can affect the test results.
• It is recommended to arrive for the test by 9:00 AM.

If the patient is not properly prepared for the test, the results may not be fully reliable.

• Test results are available within 3 business days.
• The results can be collected at the reception of any Medicover Center.
• Results are also available online via Medicover Online (an access password must be obtained at the reception of a Medicover Center).