LOINC long common name : HTT gene CAG repeats [Presence] in Amniotic fluid or Chorionic villus sample by Molecular
genetics method;
LOINC short name : HTT gene CAG Rpt Amn/CVS Ql;
LOINC description : Prenatal diagnosis of Huntington disease (HD) by detecting the presence of a CAG expansion
in the HTT gene in amniotic fluid or chorionic villus sample (CVS). This test may
be performed when there is a family history of a CAG expansion.;