All our cats are, if they're older then one year, scanned for HCM and proved to be HCM free. The grandparents of our cats have been proven HCM free too.
Of course before mating all cats are tested on FIV and FeLV
{Bemisu Lord Bigglesworth
red white
born 23 august 2003
Mrs. Cloudy's Pride Morpheus
black
born 24 Novmeber 2004
Two friends together
English 
Bemisu Lord Bigglesworth