@Trent Granger the handout above is very helpful. Ty will give you the definitive answer, but his number that comes up again and again is the two added together: he wants Estrone (E1) plus Estradiol (E2) summed in the 50–100 pg/mL range. He's said some men feel better nearer 80–120, and he's said that pushing the sum under 50 makes you feel awful in a way that looks a lot like low testosterone. The part most clinics get wrong is only running E2. Estrone can come back two or three times your estradiol, and there's no fixed ratio between men, which is exactly why he treats the sum. Good that you're getting both. For what it's worth, my last panel (Aug 28) had Estradiol 60 and Estrone 68. Summed, that's 128, so a bit above his 50–100 band, though he's said you should go by how you feel rather than chasing a range. If yours comes back high, his rule of thumb is roughly 1 mg of anastrozole per week for every 50 pg/mL you're above target, spread out over the week — then retest in 2–3 weeks and adjust from there. A few threads of his worth reading: E1 + E2 target range — https://www.skool.com/drtyvincent/new-here Why both forms get tested — https://www.skool.com/drtyvincent/estrone-serum-immunoassay-vs-lcmc-tests Anastrozole dosing and when to retest — https://www.skool.com/drtyvincent/doctor-says-dont-use-anastrozole-do-you-agree