After the Birth of Your Child Several screenings will be performed to ensure your child’s health and safety after delivery. State Blood Screening The Michigan Department of Public Health requires all babies born in Michigan to have a blood test that checks for more than 40 metabolic disorders. If detected early, these disorders may be treated to prevent mental retardation or other serious problems. The blood sample is taken by heel stick 24 hours after birth and is repeated before your baby is discharged. Heart Screening This tests helps identify babies who may have a congenital heart defect