Initially, I had a blood test which revealed that my fasting blood sugar was 5.8 mmol/l last October. At that point, I had symptoms indicative of diabetes and my doctor referred me to a 2 hour glucose tolerance test. Having prepared for the test correctly by consuming a high carb diet for 3 days prior, the test revealed that I was negative. Yet I was still experiencing symptoms and subsequently had a couple more blood tests, 2 urine tests and another glucose tolerance test just to make sure. All tests revealed that I was negative for diabetes and bear in mind that I prepared for them correctly to avoid false positive results.
I am still currently experiencing symptoms such as frequent urination, eye irritation, tingling feet, abdominal grumbling, passing a lot of gas and most of all, unintentional weight loss of 11kg (From 65kg to 54kg). I have been losing weight no matter how much eat. I do not have thyroid problems as I had this checked (TSH). My doctor has insisted that I am not diabetic due to all these test results/normal blood sugar, but I am not convinced.
So 2 questions:
1) Do diabetics always have higher-than-normal blood sugar levels when they take blood tests and glucose tolerance tests?
2) Am I diabetic, or do I have another metabolic/endocrine problem? I say this because my body does not seem to be absorbing or processing the food properly, hence the weight loss.