URL of this page: //medlineplus.gov/ency/imagepages/9125.htm

Blood types

Blood types

Overview

The four main blood types: A, B, AB and O.

Review Date 1/19/2018

Updated by: Richard LoCicero, MD, private practice specializing in hematology and medical oncology, Longstreet Cancer Center, Gainesville, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.