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A member asked:
My wife & son passed california newborn screening for cf, does that mean odds are low for typical cystic fibrosis or mild form?
A doctor has provided 1 answer
Newborn screening : for Cystic Fibrosis is done by Immunoreactive Trypsinogen, IRT. If the IRT level is ^, DNA tests for CF gene mutations are done on blood on the Guthrie card. CF Foundation-accredited Care Centers in CA look for an "intermediate" sweat chloride result in young infants who do not gain wt. & have bad gas, abdominal pain & loose or hard stools &/or wheezing/coughing for > 2 wks. to diagnose CRMS.
Answered 1/2/2016
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