Oct 08, 2024
What to know about the glucose tolerance test: Procedure and purpose
Siddhartha JanaA glucose tolerance test (GTT) determines how well the body processes glucose, the primary energy source for cells.
Source: Canva
The test typically involves administering 75 grams of glucose and measuring blood samples every 30 to 60 minutes for up to three hours.
Source: Canva
GTT is commonly used to diagnose diabetes, prediabetes, gestational diabetes, and monitor blood sugar control in diabetic patients.
Source: Canva
The test also helps identify insulin resistance and can be performed in specific conditions like reactive hypoglycemia and certain carbohydrate metabolic disorders.
Source: Canva
Patients must fast for 8-12 hours before the test, followed by an initial blood sample and a sugary solution.
Source: Canva
Blood samples are taken at 1-2 hour intervals after consuming the glucose solution to measure blood sugar levels.
Source: Canva
Normal results show blood sugar levels returning to normal within two hours, while impaired glucose tolerance indicates higher-than-usual levels without reaching the diabetic range.
Source: Canva
It is essential to consult a healthcare professional for accurate diagnosis and interpretation of GTT results.
Source: Canva
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