Sandraz, Stavia, and Kitano, thanks for your comments. Much appreciated.
Yes, I imagine the study testing will include these hormones, but as Stavia pointed out, hormones do fluctuate during perimenopause, so a single snapshot in time might be of limited value. I will be patient and trust that if they believe I need HRT based on testing, age, and symptoms, they'll let me know. And I imagine they might actually suggest a specific dose and brand.
It is good to hear that sleep for the two of you improved with HRT.
I also have a problem with low DHEA. Earlier this year, I had been taking 5 mg of DHEA per day, but saliva testing showed my DHEA was near zero, as was my testosterone. So my doctor suggested I increase my dose, up to 25 mg per day. I went with 15 mg. After a few months, I was retested and my DHEA and testosterone were way high. My doctor said stop all DHEA for two months. Now I'm doing one week on, one week off, of 15 mg of DHEA per day, per the recommendation of my alternative healthcare provider.
For now, I'll just do my best to be patient (not one of my virtues).