I kind of doubt they are bothering to do blood work for hormone levels-- that's kind of the least of Jahi's problems, being that the center of her brain is gone-- an area with absolutely critical structures. She was at an age to be on the verge of menarche when she became brain dead, so it doesn't seem odd to me that she could have had uterine bleeding. Fat tissue (along with ovaries, and adrenal glands) also produces estrogen, and she was very overweight at the time of surgery.
It doesn't appear (on Dolan's shared MRI view) that Jahi still has a sella turcica, or a pituitary gland, or a hypothalamus, although other slices and a radiologist or more experienced professional would have to confirm this. The sella turcica is a bony enclosure in which the pituitary resides. With the 2 weeks of no circulation or perfusion to her brain, I don't see how the pituitary could have survived.
http://en.wikipedia.org/wiki/Sella_turcica
If the sella turcica is gone, the tiny pea sized pituitary is almost certainly gone, too. We discussed a bit about this a few pages back, about the hypothalamic- pituitary- ovarian axis. The hypothalamus appears to be gone, also.
Interesting little side note about the pituitary-- if a person has a tumor there, and needs surgery, the surgeon goes in thru the front of the face, under the top lip, and along the top of the maxilla thru the nose area,
or directly thru one of the nares itself. Pretty cool! I saw a couple in anesthesia school. The surgery is called a "trans-sphenoidal hypophysectomy". Some good diagrams at the link.
http://www.mayfieldclinic.com/PE-EndoPitSurg.htm#.VDix7Ol0wqQ