Glucose Tolerance test (GTT)

Description

Overview of Glucose Tolerance Test (GTT)

At AIMS Diagnostic Center, the Glucose Tolerance Test (GTT) is a specialized clinical metabolic evaluation used to analyze how your body handles dietary glucose. The test involves taking a baseline fasting blood sample, consuming a measured glucose liquid solution (typically 75 grams), and collecting subsequent blood samples at timed intervals to track how rapidly sugar is cleared from your bloodstream.

Key Diagnostic Uses

• Gestational Diabetes Screening: Essential diagnostic check for pregnant women to evaluate pregnancy-induced carbohydrate intolerance.
• Prediabetes & Insulin Resistance: Identifies impaired glucose tolerance before elevated blood sugar causes permanent tissue damage.
• Type 2 Diabetes Diagnosis: Confirms metabolic dysfunction when routine fasting or random glucose readings are borderline.

When Should You Get a Glucose Tolerance Test?

Healthcare professionals recommend booking a GTT if you experience or require:

• Routine pregnancy screening (usually performed between weeks 24 and 28 of gestation).
• Borderline fasting blood sugar results needing formal clinical evaluation.
• Symptoms of metabolic syndrome, insulin resistance, or Polycystic Ovary Syndrome (PCOS).
• Unexplained weight changes, persistent thirst, or high blood pressure risks.

Test Guidelines & Preparation

• Fasting Requirement: 8 to 12 hours of overnight fasting is required prior to baseline sample collection.
• Procedure Note: Multiple blood draws are collected at timed intervals (e.g., 1 hour and 2 hours) after drinking a standard glucose drink. Rest is required during the testing window.
• Sample Type: Venous Blood Sample (Plasma).
• Turnaround Time: Same-day digital reports available online & via WhatsApp.