Most of the time, one can guess somebody's gender by reading his/her first name. Most first names have a well-defined gender, such as Alice or Robert. ...Well, most. Sometimes the only name you get is an ambiguous abbreviation, such as Sam. Or a gender-neutral name, such as Dominique or Claude in French. Or worse, a name whose default gender changes from one country to another (or even over time in the same country!), like Andrea which is typically female in the U.S. but typically male in Italy (in Greek it means manly).
It is the most sensitive and specific blood test for celiac disease and is the single test preferred by the American College of Gastroenterology, according to its 2013 guidelines, as well as the American Gastroenterology Association for the detection of celiac disease in those over the age of 2 years.
Studies demonstrate that where levels of these antibodies are elevated, more than 95% of patients will be found to have celiac disease. In other words, if you have a a high tTG, DGP or EMA test, then it is almost certain that you have a diagnosis of celiac disease (the next question is whether you need an endoscopy).