Blood Healers are Silver healers who can heal themselves but are unable to heal others.
"Blood Healers are perceptors, gifted with the ability to heal themselves from almost all wounds and disease. However, their abilities are extremely limited by knowledge, and a deep understanding of the human body is required to utilize this ability to it's full extent. Many blood healers are considered immortal, which is a falsehood. Eventually, even the most talented and intelligent of blood healers will succumb to the slow decay of age." -Veronica Roth, "War Storm" "On Silverblooded Abilities"