Ammonia determination in blood using the tca direct method - Gips, C.H.; Wibbens-Alberts, M. (Elsevier)
Konitzer and Voigt's (modified) method for the determination of ammonia in blood and plasma has proved to be of value for clinical use. No special apparatus is required. In our opinion, of all blood ammonia determinations, this is one of the easiest to perform. Heparinized blood collected anaerobically may be stored at room temperature (20^o) for at least 120 min without appreciable rise of the ammonia content. The preser- vation of blood and trichloroacetic acid blood filtrate, ''TCA-filtrate'', over a longer period and under different conditions has been studied. For ammonia analysis, the TCA-filtrate may be stored deep-frozen at -20^o for at least 14 days.
http://linkinghub.elsevier.com/retrieve/pii/0009-8981(68)90355-0
Keywords: WW-YZ