FWIW I asked doc for diabetes test today and he basically rolled his eyes. However he also didn't agree with potassium. My level was 4.1 after ingesting a lot of potassium, both times.
dont ask for diabetes! you are sporty and slim. normal doctors are morons they do not even know the official symptoms for diabetes.
they say only fat people are diabetics. i was BMI 19 and already insulin resistent! and the doctor rolled his eyes as well...
thou i do not believe you have any diabetes. i believe you have rollercoaster glucose levels in blood.
this is completely different from diabetes. diabetics have too much glucose on average.
there are problems with blood glucose levels with are not diabetic.
my girlfriend has those kinda problems. and she knows a few ex-anorexics which also have this kinda weird blood sugar drops. they constantly slide into hypoglycemia.. they have blood levels of sugar where normal people would be in a coma. need to constantly eat at night to stabilize it again.
i am not saying you have that either, just making a example what can happen on a blood sugar level - besides diabetes.
btw, the correct test for diabetes is a OGTT on empty stomach in the morning. where glucose and insulin/c-peptid levels are measured in intervals at like 0, 30, 60, 120, 240 minutes. people can have normal blood glucose levels and a low A1C but already be insulin resistent (pre diabetic) - i was.
but again, i doubt you have that. i dont think you need to do a OGTT. especially as you have to drink 75g glucose/fructose on an empty stomach. YIKES
the usual test for blood HBA1C levels and morning glucose in serum are completely useless for you. only severe diabetics have those elevated. you need to measure yourself in the acute sitation what the current blood sugar of yours is.
the best thing is you get one of those flash glucose monitors like this one
https://freestylelibre.com/ - or whatever products u have in USA available (dexcom maybe?). this freestylelibre costs like 70$.
you plug it into your arm, it is there for 2 weeks and records your blood glucose every second. you also can check your current blood glucose on your handy.
you only need to do this once, to get a understanding how your glucose levels develop under certain conditions.. if there is a connection with your symptoms.
any high dose vitamin especially b12, fcks sensitive bodies up. you can have any symptoms just by this.
also then there could be overmethylation , axiety is typical for this... methyl trap and a zillion other things related to it. and of course potassium.
i am not saying , that you do not have no potassium issues.
just saying, keep your eyes and mind open to different possibilities. you still can follow the potassium route while checking for other things at the same time.
the sad thing i discovered, there are things that help me on certain symptoms, e.g. diabetes, but make other things worse like muscle weakness... or asthma. this whole situation is insanity inducing. everyone with cfs for 10+ years going through this and is not insane should get a medal. this is the ultimate test in life.
btw your primary care doc knows nothing about diabetes. he better shut up.