They do test them. However, as the vast majority of people don't have those markers, FTDNA simply doesn't include them in the count for advertising purposes. Diana > -----Original Message----- > From: y-dna-projects-bounces@rootsweb.com On Behalf Of James Castellan > Sent: Monday, June 14, 2010 9:42 AM > To: y-dna-projects@rootsweb.com > Subject: Re: [Y-DNA-projects] Medley Family DNA > > Diana, > > How does FT DNA know if one has 19b, 464e and 464f to decide > to add those to be tersted? > > Jim