We have all had a blood test before, but have you ever wondered what happens once the needle is removed and the vial is sent ...

As for other Kardashians like Kourtney, she apparently keeps a sample of Travis Barker's blood in a vial. It's meant to be romantic? Kourney Kardashian has a vial of her husband's blood.

To get the test, you’ll have a blood sample taken at your doctor’s office ... They’ll use it to collect a small amount of blood into a vial or test tube. The whole procedure generally ...

Medically reviewed by David Ozeri, MD The erythrocyte sedimentation rate (ESR) blood test measures how quickly erythrocytes, ...