26th August 2020

A newborn baby boy is found to have a positive result for cystic fibrosis on the newborn bloodspot screening test

A newborn baby boy is found to have a positive result for cystic fibrosis on the newborn bloodspot screening test. They are otherwise thriving. 

Which of the following tests would be an appropriate diagnostic test? 

Which is the SINGLE most appropriate option from the list below? Select ONE option only