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.
So what exactly is an Ultrabook and how is it different than a laptop/tablet/PC? The definition of an Ultrabook is a high-end subnotebook defined by Intel. Ultrabooks are designed to be light weight without compromising performance and battery life. They use low-power Intel processors with integrated graphics and unibody chassis to fit larger batteries into smaller cases.