Like "Lindy, Here's something on Ketones and testing from Joslin diabetes center: http://www.joslin.org/info/ketone_testing_what_you_need_to_know.html You can buy either a meter which uses special strips to test for ketones (I know that it's available, but don't know much about it) Or you can find a testing kit with strips you dip into your urine and turns a color. The color tells you whether keytones are spilling into your urine, and I think it tells how much. You can find those kits in most pharmacies with the diabetes supplies."