Fasting and "acute perturbations" are not needed for HbA1c test and it reveals average glycemic control over 3-month period. HbA1c less than 5.6% is considered normal. Glucose status can also be tested through fasting blood sugar (FBS) and requires a blood sample after a patient has fasted for at least eight hours, so it might not be as convenient. Patients who have gotten oral blood samples taken say it feels as if part of a normal procedure, and dentists say it is convenient.In a study that analyzed data from 10,472 adults from 2013 to 2014 and 2015 to 2016, it was revealed that screening for risk of prediabetes in the dental setting has the potential to alert an estimated 22.36 million adults. Diabetes may be asymptomatic for a long time, but since it would be wasteful to test every patient at the dental office, utilizing known risk factors may guide who is ideal for testing. Since a history is already taken at a dental office, a few additional questions would help guide a dentist on narrowing down who the test is recommended for. For example, people with high BMI are at higher risk for diabetes. A study done by the School of Dentistry, Diabetes Research Centre, Mazandaran University of Medical Sciences in Sari, Iran found a relation between periodontitis and the prediabetic condition, and this could be another tool to help guide who might be recommended to take the test.
History
Edwards syndrome was first identified by John Hilton Edwards in 1960, although he originally believed it to be caused by a trisomy of chromosome 17. Klaus Patau and Eeva Therman reported another two cases shortly thereafter. They identified the extra chromosome as being part of what Pataus lab called "group E", containing chromosomes 16, 17, and 18, but were unable to determine which chromosome was responsible at the time. Analyzing 5 more cases, they were able to determine that the extra chromosome was in fact chromosome 18. See also
18q deletion syndrome

References
External links

Edwards syndrome at Curlie
Perinatal Hospice Care - Preparing for birth and death"
Humpath #5389