From my understanding, The POS portion means the medical officer will review if there are any positive results. Some companies have the MRO review all tests, positive or negative. In your case, it looks as though only positive results make it to the MRO.

As far as the second question...I took a 9 panel test last week and used QF. I'm starting work in two weeks. :-) You *should* be fine....keep us posted.