No appointment is necessary, and walk-in patients are welcome. Test results will be issued at the time of the screening. J. David Maher, M.D., a family physician at Decorah Clinic, suggests that patients do not eat solid foods and drink only water after midnight on the evening before the screening. Following these instructions will provide the most effective screening. Patients with mild diabetes might not exhibit symptoms for years.
Many adults are unaware that they are diabetic until they have a glucose test.