I am using a P-channel MOSFET as a switch in my design & I have connected the drain to the load. The load needs 0.8mA of current. How can I decide whether the MOSFET is conducting that much current if I connect the source of the MOSFET to 3V ? The MOSFET used is BSS84 from Fairchild & the link for BSS84 datasheet is given below. 

[BSS84 P-channel MOSFET][1]


  [1]: http://www.fairchildsemi.com/search/tree/controller?searchText=bss84&textBtn.x=0&textBtn.y=0