Cystic Fibrosis

Genetic test for CFTR gene to assess risk or diagnose Cystic Fibrosis.

Test description

Caused by inherited variations in the CFTR gene, depending on their number and type, a variety of clinical outcomes can be observed. These vary from being unaffected to severe lung and pancreatic disorders (CF) or milder effects such as male infertility, bronchiectasis or pancreatitis. This test is included in the Genetic Carrier Screen panel.

Test information

Test name

Cystic Fibrosis

Clinical indication
  • Carrier Screening: testing of a prospective parent with no family history of cystic fibrosis for determination of the risk of having a child with cystic fibrosis.
  • Carrier Testing for either:
    • a relative of a person with a known CFTR pathogenic variant
    • a reproductive partner of a person with a known CFTR pathogenic variant
  • Diagnostic testing: for a differential diagnosis of a person with suspected CF
  • For the testing of a pregnant patient and/or their partner in order to make or exclude a diagnosis of cystic fibrosis in the fetus.
  • For the investigation of male fertility (CBVAD)
Gene(s)

CFTR

Method

Allele-specific PCR fragment size analysis

Turn around time

2 weeks

Medicare eligibility
  • For the testing of a pregnant patient and/or their partner in order to make or exclude a diagnosis of cystic fibrosis in the fetus: 73350, 73347, 73346
  • For the investigation of male fertility (CBVAD): 73345
Price

$190 if not covered by Medicare

Test request form

Standard pathology request form

Sample type

Blood

Collection type

6mL EDTA tube

Special instructions