Neonatal cystic fibrosis screening

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Infant blood sample

Cystic fibrosis screening - neonatal; Immunoreactive trypsinogen; IRT test 

Risks associated with the test include:

• Infection (a slight risk any time the skin is broken)
• Parental anxiety over false positive tests
• False reassurance over false negative tests

The IRT level does not indicate the severity of the CF. False-positives may occur.

Review Date: 05/16/2005
Reviewed By: John Goldenring, M.D., MPH, Department of Pediatrics, Children's Hospital, San Diego, CA. Review provided by VeriMed Healthcare Network.