Hi. 16th September. NFD. I’ve been on the 5:2 diet for about 8 weeks and have lost 10lb. Brilliant! I was interested to see if fasting produced ketones in a urinalysis, it didn’t, but it did show positive to leukocytes. Is this to be expected? I’ve repeated it a few times and leukocytes are positive after a fast day but not after a couple of Non fast days. Hope someone has an idea why this is. Thanks