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Photograph of a newborn being caressed by female hands

Newborn screening tests take place before your newborn leaves the hospital. Babies are tested to identify serious or life-threatening conditions before symptoms begin. Such diseases are usually rare. However, they can affect a baby's normal physical and mental development.

Most tests use a few drops of blood from pricking the baby's heel. A hearing test involves placing a tiny earphone in the baby's ear and measuring his or her response to sound.

If a screening test suggests a problem, your baby's doctor will follow up with further testing. If those tests confirm a problem, the doctor may refer you to a specialist for treatment. Following your doctor's treatment plan can save your baby from lifelong health and developmental problems.

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