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.
Medical Definition of ULTRAFILTRATION. : filtration through a medium (as a semipermeable capillary wall) which allows small molecules (as of water) to pass but holds back larger ones (as of protein). Britannica.com: Encyclopedia article about ultrafiltration. filtration through a medium (as a semipermeable capillary wall) which allows small molecules (as of water) to pass but holds back larger ones (as of protein). â ulÂ·traÂ·filÂ·trate \-Ëfil-ËtrÄt\ noun.