Thank you for your dedication to the lifesaving mission of the American Red Cross. By making the choice to donate blood, you are making a difference in the lives of many individuals who you may never meet – individuals with sickle cell disease, moms with complicated childbirths, people battling cancer, those with chronic health conditions such as heart disease, individuals with traumatic injuries from accidents, and many more.
After each blood donation, your unit of blood is sent to a Red Cross lab to determine your blood type and Rh factor, undergo infectious disease testing and may also be screened for sickle cell trait.
During a recent blood donation, you may have received notification from the Red Cross that your screening indicated the presence of Hemoglobin S, a key indicator of sickle cell trait. The results of this screening are only a preliminary sign that your red blood cells contain Hemoglobin S. We encourage you to discuss the screening results with your healthcare provider. You may also find the resources on this page helpful to learn more about this important health screening.