Hi xpinky,
I use the qcap too and this happens. Some liquid must just stick to all the different vials and parts. There is a little extra menopur than the 75 dosage in each bottle to account for the slight loss in all the transferring around (according to the insert). If you are seeing significant loss in liquid (like half?) I'd call the nurse to ask if something is wrong, if only to ease your mind. The meds matter more than the liquid to dissolve it in, but you definitely want as much as you are mixing.