I had a blood test, in fact, I thought my thyroid might be a problem but it came back with raised blood sugar levels. They now want me to do a 'fasting blood test' for 8 hours but I can't go without drink and food for that long. The nurse was much nicer than the receptionist and said I could certainly sip water. But I often need to nibble something small (eg nuts & raisins) in the night otherwise I get griping pains and can't sleep. I find it very difficult having blood tests anyway, but this would be nigh on impossible for me. I was wondering if a urine test would be better. I emailed my GP but am still waiting for a reply.