I'd like to measure my ketone levels whilst I exercise on my bicycle over Easter. I have a One Call combined glucose/ketone meter, but the box of 25 ketone strips have expired. I don't want to pay for a fresh box as they are expensive. I'm considering buying some standard strips that are dipped in urine to test for ketones. If you are using them, which ones are you using? How reliable and accurate are they? Thanks.