Final answer:
Diabetes registries use medical history review and fingerstick glucose testing for case finding. Genetic testing is not typically used for this purpose. Confirmatory tests for diabetes include the oral glucose tolerance test (OGTT) and A1C test.
Step-by-step explanation:
Methods used for case finding in diabetes registries include medical history review and fingerstick glucose testing. Genetic testing is not commonly used for case finding in diabetes. Medical history review involves looking at the patient's prior health records to identify indications of diabetes. Fingerstick glucose testing is a quick, preliminary method of assessing blood glucose levels and determining if further testing is needed. Other diagnostic methods mentioned are blood pressure measurement, which is not specific to diabetes, and tests like the glucose tolerance test (GTT), fasting blood glucose, A1C testing, and in some circumstances, insulin and glucagon tolerance tests (ITT and GuTT), which help in diagnosing and differentiating between types of diabetes.
It is important to note that while case finding methods such as fingerstick glucose testing can signal the presence of diabetes, more definitive tests such as the oral glucose tolerance test (OGTT) and the A1C test are used for the confirmation and management of the disease. These tests measure the body's response to glucose intake and provide a picture of blood glucose control over time.