Skip to main content
Logo for WebMD
  • Home
  • Conditions
    Conditions View All
    • ADD/ADHD
    • Allergies
    • Arthritis
    • Atrial fibrillation
    • Breast Cancer
    • Cancer
    • Crohn's Disease
    • Depression
    • Diabetes
    • DVT
    • Eczema
    • Eye Health
    • Heart Disease
    • HIV & AIDS
    • Lung Disease
    • Lupus
    • Mental Health
    • Multiple Sclerosis
    • Migraine
    • Pain Management
    • Psoriasis
    • Psoriatic Arthritis
    • Rheumatoid Arthritis
    • Sexual Conditions
    • Skin Problems
    • Sleep Disorders
    • Ulcerative Colitis
    • View All
  • Drugs & Supplements
    Drugs & Supplements
    • Drugs
    • Supplements
    • Pill Identifier
    • Interaction Checker
    • Pet Medications
  • Well-Being
    Well-Being
    • Aging Well
    • Baby
    • Birth Control
    • Children's Health
    • Diet & Weight Management
    • Fitness & Exercise
    • Food & Recipes
    • Health & Balance
    • Healthy Beauty
    • Men's Health
    • Parenting
    • Pet Health
    • Pregnancy
    • Sex & Relationships
    • Teen Health
    • Women's Health
  • Symptom Checker
  • Find a Doctor
  • More
    More
    • News
    • Blogs
    • Podcasts
    • Webinars
    • Newsletters
    • WebMD Surveys
    • WebMD Magazine
    • Best Hospitals
    • Support Groups
  • Privacy & More
Log In
  • Diabetes
  • Videos
Diabetes
  • Overview & Types
  • Symptoms & Diagnosis
  • Treatment
  • Living With
    • Understanding Blood Sugar
    • Diet & Exercise
    • Better Living
    • Complications
  • Related Conditions
  • Type 2 Diabetes
    • Overview
    • Symptoms & Causes
    • Diagnosis & Tests
    • Prevention & Treatment
    • Living & Managing
    • Complications & Related Diseases
  • Type 1 Diabetes
    • Overview
    • Treating & Managing
    • Complications & Related Conditions
  • Gestational Diabetes
  • Appointment Prep
  • View Full Guide

What Is the A1C Blood Test for Diabetes?

Show Sources

Share
View privacy policy and trust info

More on Diabetes

photo of more on allergies

Navigating Diabetes Diagnosis & Treatment

8 Simple Snacks That Won't Spike Your Blood Sugar

Here's How a Continuous Glucose Monitor Works

Recommended
photo of man using glucometer

FEATURED

Top doctors in ,

Find more top doctors on

Related Links

  • Diabetes News
  • Diabetes Reference
  • Diabetes Slideshows
  • Diabetes Videos
  • Diabetes Quizzes
  • Diabetes Blogs
  • Diabetes Medications
  • Find an Endocrinologist
  • Diabetes Overview
  • Diabetes Symptoms
  • Diabetes Causes
  • Diabetes Diagnosis
  • Diabetes Treatment
  • Types of Diabetes
  • Diabetes Complications
  • Type 1 Diabetes
  • Type 2 Diabetes
  • Gestational Diabetes
  • Prediabetes
  • Blood Glucose Tracker
  • Diabetic Neuropathy
  • Diabetic Macular Edema
  • Insulin
  • Heart Disease
  • Metabolic Syndrome

  • Policies

    • Privacy Policy
    • Cookie Policy
    • Editorial Policy
    • Advertising Policy
    • Correction Policy
    • Terms of Use

  • About

    • Contact Us
    • Careers
    • Newsletter
    • WebMD App
    • Corporate
    • Site Map

  • For Advertisers

    • Advertise with Us
    • Market Research
  • TRUSTe
  • TAG Registered Seal
  • Adchoices

© 2005 - 2025 WebMD LLC, an Internet Brands company. All rights reserved. WebMD does not provide medical advice, diagnosis or treatment. See additional information.

Logo for WebMD