Dfox;
Hi Dfox, I'm not sure I understand the questions, so I'll try to help as best I can.
So, Are you still taking hydrocortisone, HC? If so, you can still get an ACTH stimulation test, but you will have to switch to another corticosteroid for a time for the test to be accurate. ( dexamethasone) The ACTH stim. test is given to determine whether the adrenals respond to the pituitary hormone, ACTH, and then produces cortisol.
Other hormones should be stopped for a time too. Cortisol is made from progesterone, and estrogens slow the metabolism of cortisol, keeping it in the body longer.
If you still have low sodium when taking HC, ( HC has some mineralocorticoid properties), then aldosterone and renin activity should be measured. Sodium levels can be increased with the addition of fludrocortisone, a drug that replaces another adrenal hormone.
In Dr. Jefferies book,"Safe Uses OF Cortisol", he tended to have the opinion that patients should remain on it indefinitely, but many patients would taper off anyway, or move on.
In Dr. James L. Wilson's book, "Adrenal Fatigue....", his focus was to use lifestyle, dietary, and supplements to overcome this condition. He seemed to only recommend cortisol as a last resort, and only for 2 yrs. at the longest.
I haven't read of Dr. Borkin, but I agree that ACTH, and cortisol should be measured before Thyroid is treated. I don't think this is commonly done, but it should be. I agree that cortisol should also be measured along with DHEA, because starting DHEA in higher dosages can cause negative side-effects if cortisol is low.
I don't know about hormones and blood thickening.
People with low, and people with high cortisol can be prone to infections. In a healthy person, cortisol rises with infections, but only to the necessary degree.
I'm unable to recommend an Endocrinologist or practitioner, but maybe someone here could if you state your general location. You could also check online for good docs in your area, and read people's reviews/opinions of them.