And no, that’s not as silly an accusation as it might seem, nor is it based on changing reference ranges for lab tests.
Short version: Insurance decided that my steroid inhaler, which had controlled my asthma for 12+ years, was no longer on formulary, and made me switch. No explanation as to why.
And within weeks, my blood sugar started climbing.
tl/dr version:
I’m packing a few (!) extra pounds. I’m obese. It is not, therefore, inconceivable that I might develop Type 2 diabetes. In fact, since my blood work has been in the low pre-diabetic range for a few years, it is a distinct possibility.
So when I had a fasting glucose reading that was not just one or two points above normal, but in fact very close to the “full-blown diabetes” range, I took i seriously. Ate a bit better. Got a bit more exercise. Dropped 15 pounds.
Got retested - and blammo. Full-on diabetes per that test: 130-something glucose, 6.6 A1C. Well shit.
Then I got to thinking… and checked my records… and realized that 3 weeks prior to that “close to diabetes” test, I had started a new inhaled steroid. And had been using it for 5+ months when I retested. And elevated blood sugars are possible with any steroid (though considered very rare with the inhaled 'roids).
The change wasn’t done for any medical reason whatsoever. It was done because my health insurer, for whatever lame-ass reason, decided that I had to switch to an alternative that either was less potent, or equally as potent but with added possibility-of-sudden-death-for-no-good-reason fun.
And here’s the real kicker: ALL OF THE ALTERNATIVES COST THE INSURER MORE THAN WHAT I’D BEEN USING.
So: FUCK YOU, FORMULARY COMMITTEE.
On a hopefully happier note: I was retested after switching to another inhaler (old steroid, added-potential-for-sudden-death) and things are improving. No proof, but strong circumstantial evidence.