A positive tTG with a negative gliadin can mean a number of things: You got a false positive tTG. (Possibly due to some other autoimmune disorder) You got a false negative gliadin. (This is actually much more likely than with the tTG test. Reported sensitivity of gliadin test is in the 65-75% range, meaning that roughly 1/4-1/3 will be false negative)
Definition of ultra. : going beyond others or beyond due limit : extreme.
Comments. An ultra-marathon is any race longer than the classic marathon distance of 26.2 miles. Growing ever more popular, you can do an event almost every weekend in Britain at the moment (although that's not recommended if you don't like bits of you falling off).