It’s my guess she’s talking about "androstenedione." Androstenedione is one of adrenal hormones that can be elevated when you are not in good control, but it is a different class of steroid hormone than 17-ohp. 17-ohp is a glucocorticoid, androstenedione is an androgen. Because most of the damage due to uncontrolled CAH is due to elevated androgens, many doctors will choose to leave the dose alone if the androgens are in normal range, even if 17-ohp is elevated (much like your doctor has done.)
Like Jayne said, there are a bunch of other possibilities. Renin and electrolytes are also measured in salt wasters, but those tell you whether the florinef dose is right, so really shouldn’t affect what the doctor decides about the hydrocortisone dose.
ACTH can also be measured, but that is a pituitary hormone, and these days most doctors don’t seem to run it very often.
The other possibility is testosterone, which is also an androgen, but that usually fluctuates a little bit less than the andro. So, if it’s between testosterone and andro, it’s my guess it’s andro.
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Here an article from an old CARES newsletters, if you’re interested. It talks about the different tests that are done to measure control, and what everything means.