>Sorry about the delay in replying to this--and for not having anything very definite to say. It's already been pointed out that leptin is the very >powerful appetite suppressing hormone. Four hours after having some clear broth, you'd be in a fasting state, so leptin would be expected to be low, and >appetite high. I suspect that the "normal range" must represent the whole range of leptin levels, from keen hunger to utter satiety. I'm only surmising >this, however. I haven't looked up anything about the norms for the reference range. 

>Todd Moody 

OK then maybe it was "normal" for that situation. Oddly the test is supposed to be done when fasting. I guess this would tell them if there is leptin resistance.

Are there any tests to check how well the hypothalamus or pituitary is functioning. I am getting blood drawn this morning and figure I'll make the most of it.

Thank you...

Kristina