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.
ultrafiltration. One of the mechanisms that produce aqueous humour from blood plasma into the ciliary epithelium of the ciliary processes. This mechanism takes advantage of the natural pressure gradient between the capillary vascular pressure and intraocular aqueous pressure, to drive fluid into the eye.ltrafiltration is one of three physiological processes that create aqueous fluid, the others being active transport and diffusion. See ciliary body; diffusion; active transport aqueous rate of outflow humour.