Prediabetesis an early warning sign that you may be headed towards full-blowntype 2 diabetes.

The sooner you implement lifestyle changes the more you increase your chances of staving off diabetes.

Prediabetes means your body is not producing enoughinsulinor the insulin does not work properly.

Man getting weighed by doctor

Jose Luis Pelaez / Photodisc / Getty Images

Biking, running, swimming, and hiking are highly recommended activities.

Get Tested

A simple blood test is used to diagnose prediabetes.

The most popular, comprehensive, and accurate test is the glycated hemoglobin (A1C) test.

A1C Test

An A1C test measures your average blood sugar over the past 90 days.

It does so by measuring the percentage of blood sugar, or glycated hemoglobin, in the blood.

Certain conditions like pregnancy and some blood disorders can lead to inaccurate test results.

Want to better understand what your test results mean?

Start by inputting your results into our A1C test analyzer below.

This is normally the first test healthcare providers use because it renders immediate results.

A blood sample is taken after you fast for at least eight hours or overnight.

Certain medications can affect your blood sugar levels.

The longer you wait the greater the risk of severe complications.

Centers for Disease Control and Prevention.Prediabetes - your chance to prevent bang out 2 diabetes.

American Diabetes Association Professional Practice Committee, ElSayed NA, McCoy RG, et al.2.

Diagnosis and classification of diabetes: standards of care in diabetes2025.Diabetes Care.

2025;48(Supplement_1):S27-S49.

2021;326(8):736-743. doi:10.1001/jama.2021.12531

Testing.com.Hemoglobin A1C (HbA1c) test.

American Diabetes Association.Understanding diabetes diagnosis.