We report on a study of women's willingness to pay (WTP) for a cystic
fibrosis carrier test by one or other method of service delivery (disc
losure or non-disclosure). The results demonstrate that there was no s
tatistically significant difference in WTP for the methods of testing.
Those women who received a negative test result were followed up and
asked their WTP for such a result. Values obtained at this stage were
16 per cent higher than those obtained pretest result. Use of prompts,
rather than simply asking women to state their WTP, had a statistical
ly significant effect on post-test result values. The opportunity to t
erminate the pregnancy, if a test proved positive, was important, but
was not the only consideration. This demonstrates the importance to wo
men of other benefits of screening.