I've taken it several times over the last couple years. The scores ranged from 70 to 80. Depression affects my life to a great deal. I'm still functional and I'm able to maintain relationships/friendships, job etc but it is a lot of suffering at the same time.

The test is just a number. The higher the number the more it is probably impacting your life. Doctors can give you an accurate diagnosis if they know enough about you and try to understand.