GLF (Glucose Fasting)

A Glucose Fasting (GLF) test measures your blood sugar level after an overnight fast of 8–12 hours. It is one of the most important tests for diagnosing diabetes, prediabetes, and insulin resistance. Elevated fasting glucose levels may indicate early sugar imbalance even before symptoms develop. Doctors recommend this test if you experience increased thirst, frequent urination, fatigue, weight changes, or have risk factors like obesity or family history.

For the GLF test, only water is allowed during the fasting period. A small blood sample is collected in the morning to give the most accurate reading. The results help evaluate your baseline blood sugar and guide further tests such as PP2 or HbA1c for a complete assessment of glucose control.

PP2 (Postprandial 2-hour Glucose)

A PP2 test measures your blood sugar level two hours after eating a meal. It helps determine how effectively your body processes glucose after food intake. High PP2 levels may indicate diabetes, poor blood sugar control, or the need for changes in medication or diet. Doctors often use this test along with fasting glucose to assess overall glucose metabolism.

For the PP2 test, you eat a normal meal, wait exactly two hours, and then provide a blood sample. No special preparation is required beyond the fasting glucose test if both are done on the same day. PP2 is especially useful in monitoring diabetes management and understanding post-meal sugar spikes.