The term carrier testing is also often used to describe such testing, but this may be confused with tests for genetic
conditions that are inherited in a recessive fashion, which we consider below.
4.9 There is a well developed approach to such testing, as set out by the Advisory Committee on Genetic Testing
(ACGT) in its Report on Genetic Testing For Late-Onset Disorders (1998):
"When an individual is able to give consent, specific freely given consent is required before testing. In the case
of pre-symptomatic genetic testing of healthy individuals, written consent should always be obtained, though written consent
is not in itself a substitute for careful face-to-face explanation."
Similar clear requirements are set out in international instruments such
as the Biomedicine Convention and the UNESCO Universal Declaration. We did not detect any dissent from this position.