Ketones in urine but not glucose??

[Cydonia]

I'm 32 weeks, had a check up with MW on Friday where everything was fine. Sat and Sun I had a little bit of brownish discharge, but only a little and there was normal discharge too. Being a worrier (!) I decided to test my pee while I was at work- I work in a vets and we use the same dipsticks as they do in the doctors.I was looking for blood, but It came up positive for ketones, but not glucose which I thought was a bit strange? I thought you'd see ketones in a more long term, undiagnosed diabetes and therefore there would always be glucose too? Does anyone know any other causes of ketonuria? Could acidic urine affect the test as pH was 6.5? Couldnt really find anything useful online, don't know if I should be worried and ring MW tomorrow.

I had traces of ketones in my urine at one of my early-ish MW appointments (am 38 wks now and can't remember which appt it was; maybe at 16 wks?). The MW suggested it was probably just because I was hungry and my body was starting to use up its own resources. The appointment was just before lunchtime and I'd been running around all morning. Apparently, ketones (without glucose) are often found in the urine of women who are suffering from severe morning sickness, though this wasn't the case with me. My subsequent appointments were all fine. If you're worried, though, there's no harm in getting this checked out.

Ketones can be found when someone has a very high fat, low carb/sugar diet (think extreme Atkins)

Oh yes, meant to say its your body using fat reserves as fuel or something.

It can be a sign you are not eating enough and using body stores for energy as not getting enough from your diet.

Hmmm yes that all fits with what I thought already about ketones. But I did the test after lunch, haven't had any sickness and eat loads of carbs! Weird! Will do another test tomorrow (don't tell the boss!) and see what that shows.