Why call at all?

My doctors nurse just called to tell me 2 of 3 parts of my BMB results came back. So far it shows no cancer...BUT...the last part is still needed to "CONFIRM" no cancer. I was just so happy to hear about the 2 parts being cancer free that I failed to ask anymore questions like...what part are we waiting on...blood work...tissue sample...or bone sample???? Now I'm thinking...why the heck call me if you don't have ALL of the results? This is frustarting as hell. Don't they get it? Don't get me wrong...I'm glad 2 parts are clean, but if the third part isn't, then it doesn't really matter about the other two parts...right. Set me straight if my thinking is out of whack here.
Sue