How Do I Know If I Have Diabetes?

The best way to know if you have diabetes is to visit your doctor or community health clinic regularly for routine blood work. Some people may experience the following symptoms of diabetes:

  • Very thirsty (polydipsia)
  • Frequent urination (polyuria)
  • Blurred vision
  • Tired 
  • Frequent infections

Some people never experience these symptoms and often they are not evident until the diabetes is very uncontrolled. Also any or all of these symptoms may be a sign of some other condition that can only be diagnosed by a doctor.

How do I know if I am at greater risk for developing diabetes?
You are at greater risk if you have the following

  • Family history of diabetes
  • Previously had gestational diabetes
  • Lifestyle: overweight and sedentary
  • Certain races - see our incidence of diabetes page

Criteria for the Diagnosis of Diabetes from the American Diabetes Association:

These criteria are based on the following blood tests.

  1. A1C greater than or equal to 6.5% OR
  2. Fasting Glucose greater than or equal to 126 mg/dl OR
  3. 2 hour Glucose greater than or equal to 200 mg/dl after glucose drink from the lab OR
  4. Random Glucose greater than or equal to 200 mg/dl with symptoms.

#1-3 criteria should be repeated on another day to confirm diagnosis.


Reviewed by Donna Sivertsen on March 08, 2013

Diabetes Care Center in Illinois

1414 - 10th Street, Medical Building 3
Silvis, IL 61282
309-281-2209 (fax)

Maps & Directions

Diabetes Care Center in Iowa

2535 Maplecrest Road, Suite 16
Bettendorf, IA 52722
563-421-3260 (fax)

Maps & Directions

Contact Us

For more information about our diabetes services, please contact:

Bettendorf Office

Silvis Office

FacebookJoin us on Facebook!

© 2014 Genesis Health System - All rights reserved.

1227 E. Rusholme Street Davenport, IA 52803 563-421-1000