Mixing menopur question

Maggie
I took my first injection of menopur last night and was wondering how much saline to use. My doctor told us 1/2 ml, but I took that as total and my husband took that as per vial. Since he was mixing, I ended up getting a 1.5ml shot last night. I've a call in to the doctor to clarify, but was wondering what other people are doing. Thanks!