Hemoglobin A1c Blood Test

Also Known As

A1C Test, HbA1C, Hgba1c, Hgb a1c, and Glycated Hemoglobin Test.

What Is the Purpose of the Hemoglobin A1c Test

An A1c test measures your average blood sugar levels over the last three months. It’s used to help diagnose prediabetes as well as type 1 or type 2 diabetes. People who already have diabetes al
so use an A1c blood test to monitor their levels to ensure their blood sugar is under control.

What Does the A1c Test Measure?

The results measure the percentage of hemoglobin proteins in your red blood cells that have sugar (also called glycated hemoglobin). Red blood cells typically live for three months before they die and are replaced by new cells. By measuring the amount of hemoglobin A1c, you will get an average of what your blood sugar has been over that period of time.

Who Should Take an A1c Blood Test?

If you have diabetes, your doctor may suggest a regular testing schedule to make sure your treatment plan is working or needs modification. You may also choose to track your blood sugar levels on your own with an A1c lab test a couple of times a year.

Hemoglobin A1c tests can also be employed to help diagnose diabetes, especially if you have risk factors for the disease. Type 1 diabetes risk factors include a family history of the disease or age (onset is predominantly among kids, teens, and younger adults). Type 2 diabetes risk factors include unhealthy weight, sedentary lifestyle, family history, prediabetes, and age (45 or older).

Hemoglobin A1c Test Preparation

No special preparation is necessary.

Hemoglobin A1c Lab Test Results

Your hemoglobin A1c blood test result is entered as a percentage, and can include another number that reflects your Estimated Average Glucose in mg/dL.

For diagnosing the disease, the Centers for Disease Control and Prevention offers the following guidelines:

Normal A1c percentage: Below 5.7%

Prediabetes: 5.7% to 6.4%

Diabetes: 6.5% or higher

For someone who is diabetic, A1c results should be less than 7%, or the percentage that has been recommended by their physician. Typically, higher A1c test results lead to an increased risk of diabetes complications.

Where Can I Get a Hemoglobin A1c Blood Test Near Me?

Diabetes diagnosis and management are vital for maintaining your overall health. That’s why we make hemoglobin A1c tests, and other diabetes tests, easily accessible so you have greater control over your wellness.

Step 1: Order your A1c blood test online and download the lab order. (You won’t need a doctor’s approval, depending on what state you live in.)

Step 2: Visit our lab locator to find the facility nearest you among our 4,000-plus partner labs across America.

Step 3: Bring the test order to the lab and have your blood drawn.

Step 4: Accurate results will appear in your confidential Personalabs account, typically within 2 to 10 business days.

Order our hemoglobin A1c test, and browse our selection of general wellness tests.

FAQs About the Hemoglobin A1c Blood Test

How often should someone take a Hemoglobin A1c test?

The frequency of A1c testing depends on whether you have diabetes or are being screened for it. People with diabetes usually take the test two to four times per year to track long-term glucose control. Those without diabetes but with risk factors such as obesity, family history, or high blood pressure may take it annually or as recommended by a healthcare provider.

What factors can affect Hemoglobin A1c test results?

Several conditions can influence your A1c results, including anemia, certain blood disorders, kidney disease, and recent blood loss or transfusions. Even lifestyle factors like changes in diet, stress, or illness can temporarily alter glucose levels, impacting the final reading.

How does the A1c test differ from daily blood sugar checks?

Daily glucose tests measure your blood sugar levels at a specific moment, while the A1c test reflects your average blood sugar levels over the previous three months. It provides a broader overview of how well your glucose is being managed, making it an essential complement to daily monitoring.

Can lifestyle changes lower your Hemoglobin A1c levels?

Yes, consistent lifestyle adjustments such as following a balanced diet, engaging in regular physical activity, managing stress, and maintaining a healthy weight can significantly lower A1c levels. These changes help improve insulin sensitivity and reduce average blood sugar levels over time.

What is the relationship between A1c percentage and estimated average glucose?

The A1c percentage directly correlates with your estimated average glucose (eAG), which converts the A1c reading into the same units used by glucose meters (mg/dL). For example, an A1c of 6% roughly equals an eAG of 126 mg/dL, providing a more familiar way to interpret long-term blood sugar results.

Why is it important to track A1c levels regularly?

Regular A1c testing helps identify how well your treatment plan or lifestyle habits are controlling blood sugar levels. Tracking results over time can reveal trends, allowing early intervention to prevent diabetes complications such as nerve damage, kidney disease, and cardiovascular issues.