Does anyone know how much estrogen is produced by a male after castration? What is the ratio between estrogen and testosterone. I know that testosterone levels plummet to about 70ml's. But how much does estrogen rise?

Normal estrogen levels in a male range from 10-60 pg/ml. Estrogens don't actually rise after castration, however, testosterone levels may fall below the level of estrogens.

Here (http://www.pinelandpress.com/faq/hormonelevels.html) is a link you may find useful.