Well, I've been trying to find out about the food, and the effects it has on testing for diabetes. The food they seemed to have problems with was Gerty GP food. I'm still waiting for a few bits to come back, but from what I have been able to work out, the problems occurred a while back, and started giving some GP's symptoms of excessive urinated and drinking and tiredness. When tested it showed 'positive for diabetes'. Unfortunately, I havent been able to find out what testing they did, if it was blood or the urine sticks, and neither was I able to find out if there was both Glucose and keytones recorded. They realised that it was the food. Once they had changed the food the symptoms disappeared. They contacted the manufacturers and told them about it, and since, with the information I have had come back, the incidence of these symptoms has been reduced, with people still feeding Gerty GP food.
They still cant be certain it wasnt just a one off thing, where somebody in the manufactures made some mistake in the production of that particular batch. They nobody was able to find out.
I still first of all think you need to go to the vets, as these symptoms could be from something else, but if you are going to test yourself, I would still suggest testing, as is right now, without the change of diet, as a marker. If the readings are high, and you need to record both glucose and Keytone levels, then you could change the diet. One diet recommended was colourant free coarse goat mix or Russell Rabbit food, or something else without colouring, and if the symptoms disappear, then you know its the food.
My only problem with that is, it could take a while for the symptoms to go, and if it is something else like a urine infection, or even Kidney problems, you have waited too long for treatment.
If I get more information through I'll pass it on.
John.