I have all the symptoms for Cushing’s except the pink lines in the belly. Thyroid was underactive on one test but fine the next two. I had the Dexamethasone Suppression test done. Took 1.5 dose at 10:00 pm. Next morning I felt clammy, sore, weird, but I have felt like that before without the pill. Test results are 0.43* ug/dl and the Lab’s variable is 6.20-19.40. I was told the results are fine but how can they be fine if they are so low and have an asterisk?
Having had Cushing's myself and knowing many with the disease, I can tell you that no one has all the symptoms.
I can also tell you that you did the test incorrectly... the dex should have been taken at 11pm. The draw should have been at 8am, fasting. The result was a *fail* (the range is for a normal draw, the lab does not put the ranges for dex suppression on it). To *pass* it has to be above 1.2 (maybe, I forget!) or something near there. You just suppressed really low.
However, it is a test that I personally find misleading. It should be a test of location not a test of exclusion and it should be used in conjunction with a bunch of other testing. Since most people have pituitary source anyway and most people fail... well! I failed this test - and I had pituitary source, but a lot of docs tried to dismiss me on these.
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