What are the chemical reagents and how do they interact with WBC/Nitrites?

edit

This article reads like a word definition, it explains nothing of how the strips (ie what compounds on the strip) react to the presence of WBC/Nitrites, just says basically "urine testing strips are used to test urine". For instance, what is the chemical reaction that indicates WBC (ie what is it causing the color change?), what reaction, with which chemicals, results in indication of nitrites in the urine? Without this the article is useless and should be deleted since it gives no knowledge. 68.56.248.192 (talk) 00:36, 9 January 2012 (UTC)Reply

Should take a look at the article in Spanish es:Tira reactiva de orina--186.108.253.146 (talk) 20:10, 14 March 2012 (UTC)Reply