Hi Dianyla, obvioulsy you need a reliable meter. The meter I recommended, while cheap to mail order, costs a lot in the store and is rated as very reliable (my doc gave me mine, same model). Technique is important too, be sure you wash your hands first so no food residues contaminate the results. Its harder on the bike, try to wipe the sweat off your finger or it can dilute the blood.

I also suggest that you arrive at you doctors appt. fasted and ask to have your fasting glucose measured in a lab, since a lab test will be most reliable. A real glucose tolerance test may also be indicated because of the problem described losing weight when you eat carbs. Again, a lab test removes the meter error. Knowledge is power.

I think you are getting confused because you are trying to put disease labels on things. That is why I am careful to use the word impaired glucose tolerance vs diabetes. Diabetes in fact is not a single disease. Type 1, 1.5 and 2 all have very different causes, although the end result in all 3 is impaired glucose tolerance. While of course thyroid disease is separate, sometimes the symptoms can overlap. For example, in the past when I complained about being tired all the time, falling asleep after lunch, etc., and my TSH was high I was given synthroid, or my dosage was raised. BUT, when these symptoms reappeared and my TSH was low, these symptoms were intially ignored (anti-depresssants were even suggested which I refused because I knew I wasn't depressed). It was only when I complained a year later that these symptoms continued, and I was gaining weight despite extreme diet and exercise that my internist referred me to an endo. He picked up right away on my only slightly elevated fasting glucose measurements. BUT, I was also put on a combo of T3/T4 (cytomel/synthroid) to be sure my thyroid was being treated optimally, and asked to start measuring my blood glucose response to food, which for me was much more problematic than my fasting levels. My new thyroid meds I know are helping, because my body temp is now higher (used to always be 96s-97s, now its 97s-98s), but even on the new thryoid meds, I still have impaired glucose tolerance, but I can control it by my diet, and keep my blood sugars always in the 70-120 range (even after a meal) by being careful what I eat. You may also want to start tracking your body temp. as a separate indicator of how well your thyroid meds are working.

You mentioned taking cytomel, but do you also take synthroid? If so, what are your dosages? What is your TSH now that you are on thyroid meds? If this is all too personal send a PM. Whether you do or don't have impaired glucose tolerance, you need to get your thyroid meds optimized.