Letter: Cystic fibrosis: detection of heterozygotes.

Samuels and Elliott have described a new technique for detecting cystic fibrosis 
(C.F.) and the heterozygote for C.F. We have tested this technique 
in detail on a smaller number of patients. Although the number 
of samples tested in our study is small, results suggest that 
this technique is not likely to be successful in detection of 
heterozygotes for C.F. 