The doctor who checked my testosterone and cortisol levels were an endocrinologist. According to her they were normal and I already had hirsutism then. It's about four years ago. I'm going to see if I can see her again.
If based on your physical exam four years ago she decided there was a chance you might have Cushing's, then she should have run some screening tests for Cushing's.
Did you do a 24hr urine collection for cortisol and/or a midnight salivary cortisol? The high cortisol that is seen in Cushing's is produced in spikes. Sometimes the 24hr urine cortisol and/or midnight salivary cortisol have to be done multiple times and can take months to nail down. A random blood cortisol level is useless as a screening tool for Cushing's since the spike can easily be missed, unless the blood can be drawn every four hours (it happens).
Another screening test for Cushing's is a dexamethasone suppression test. It's a bit more involved than the urine and saliva tests, so it's not the first choice. Sometimes all three of these screening tests (24hr urine, midnight cortisol and dexamethasone suppression test) need to be run multiple times.
For people who live a long way from a major hospital, one way they can be properly screened without multiple visits is to go to Camp Cushie. It doesn't sound like this would be a good option for you unless you live in Seattle. I know how it is to be homebound and the toll it takes to go to the doctor. I see that your activity level is 1 - 2 and I'm very sorry to hear that. I'm at 3 and I honestly don't know how I would manage at that level.
The testing shows you how complicated it gets:
http://www.cushings-help.com/swedish.htm
a. midnight serum cortisol. Normal range is less than 1 (I think). Over 5 = suggestive of Cushing's.
b. random ACTH plasma. Normal range is 5 - 25. Over 48 = suggestive of Cushing's.
c. midnight salivary cortisol. Normal range is 0.05 - 0.17. Over 5 = suggestive of Cushing's.
d. urinary free cortisol test (UFC). Upper limit of normal range is 50. Over 50 = suggestive of Cushing's.
e. random blood cortisol levels (taken every 4 hours for 32 hours). Over 28 = suggestive of Cushing's.
For the last test,
item e, they sample blood every 4 hours in order to catch a cortisol spike. They place a picc line in a vein, so you only get poked once and then they access the line with a syringe. This would only be done in a facility like Camp Cushie, not your average clinic or lab. That shows you how unreliable taking one random blood sample is, if they've got to check it every 4 hours. They do all these tests so the patients can hopefully get a diagnosis before they go home.