82 year old disabled, speechless and incontinent mother was placed 13 days in nursing home for respite. Came back very bad (bruised, drugged although not permitted, etc.) and with very bad UTI (E.coli, enteroccocus and Citrobacter Freundii). She has been put on 6 different antibiotics (spacing them about 1 month each). At the end of the 6th one (had two left to take) she had a seizure with lots of blood in diharrea. Specialist suggested we stop antibiotics for a while (some moths he said). I've been researching a lot and doing urine tests frequently. The diharreas she used to have (chronic) have been fixed with granny smith apples dipped in vinegar (was initially to help UTI). We've also boosted her on D-Mannose and probiotics and 1 green tea per day. She seemed to get better (less abscence). Because she does not speak it is difficult to know what she has. Now although she is more "present" she seems to hurt. My question is about the UTI tests: Three days ago took a sample but was not enough. The 1st test (bilirubin, PH, ketones, etc) came back saying sample was not sufficient. The next day I took another sample. 1st test came back with everything OK except leukocytes as moderate (no nitrite for 1 st time. I was all Yahoo!). But then the 2nd test of the (1st) sample that was insufficient came back with a count of Citrobacter Freundii (I'm still waiting for 2nd test of 2nd sample). Is it possible, or how is it possible that there are no nitrite but still be Citrobacter?

***Additional info: previous tests all had nitrite and leukocyte large. A test even came back with no infection (contamination) and the one afterwards with several species of Citrobacter (letting me think Citrobacter Freundii, which is the strongest one got "killed" almost but then developped in various other species less strong.