Common Newborn Screening Tests What are common newborn screening tests?
Newborn screening tests are routinely done while the mother and newborn are still in
the hospital, after birth, to check for metabolic disorders that are not immediately
apparent after delivery. Screening tests help to prevent future problems or disorders that
may affect the normal growth and development of the baby. Blood samples may be drawn to
screen for the following:
- Phenylketonuria (PKU) - an inability to process part of a certain
protein, which may lead to brain damage and mental retardation. Treatment may include a
special formula that is free of phenylalaninc (an amino acid).
- Hypothyroidism - a condition characterized by an underactive thyroid,
which can result in growth retardation and slowed brain development. Proper treatment with
thyroid hormone replacement can help ensure normal development.
- Galactosemia - an inability to convert sugar in the milk into glucose,
which the body uses. Left untreated, galactosemia can lead to blindness and mental
retardation. Avoiding dairy products can help to prevent problems.
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