Blood Sugar / HbA1c
Blood sugar and HbA1c tests measure current and three-month-average blood glucose. They are the core tests for diagnosing and monitoring diabetes.
What it measures
A blood sugar test measures glucose at the moment of testing. HbA1c reflects the average blood sugar level over the past two to three months.
Why it's ordered
These tests are used to diagnose diabetes, check how well diabetes is controlled, and guide treatment adjustments. They are also used to screen people at risk of diabetes.
What to expect
A small blood sample is taken. Fasting may be required for some blood sugar tests. HbA1c does not require fasting.
Related conditions
Frequently asked questions
What is the difference between blood sugar and HbA1c?
Blood sugar shows the glucose level at the time of the test. HbA1c shows the average level over the past two to three months.
Do I need to fast before a blood sugar test?
Fasting blood sugar tests require 8–12 hours without food. HbA1c and random blood sugar tests do not require fasting.
How often should HbA1c be checked?
For people with diabetes, HbA1c is usually checked every three to six months. Those at risk may be screened less frequently.
Ask about this test
Contact the clinic to find out whether this test is appropriate for your symptoms or routine check-up.
The information on this page is for general health awareness and does not replace an in-person medical consultation, diagnosis, or treatment plan. If you're experiencing symptoms, please contact Aram Clinic or another qualified healthcare provider. In a medical emergency, go to the nearest emergency department immediately.