Most states check newborn babies for abnormal hemoglobin as part of routine newborn screening tests. State newborn screening includes tests for all newborns within the first few days of life. These tests identify serious, life-threatening diseases.  SCD may be found as part of newborn screening. Your family history, your child's medical history, and a physical exam are all included in the diagnosis. If the screening test shows SCD, a blood test called hemoglobin electrophoresis may be done. It can tell if your child is a carrier of sickle cell. It can also tell if your child has any of the diseases linked to the sickle cell gene. Other blood tests may also be done.