@Abby Neill I first tested Sophie with an Australian Orivet DNA test around six years ago to better understand her breed background. Last year, after she had an adverse neurological response to a wormer, I tested her for the MDR1 mutation. This gene, most common in herding breeds, can cause sensitivity to drugs such as ivermectin and loperamide. She was later screened with Embark, which assessed over 270 genetic markers and provided an inbreeding coefficient (COI%) to measure genetic diversity. For pedigree dogs, PennHIP remains one of the most reliable ways to assess hip laxity early, and I believe orthopaedic imaging should always be combined with DNA testing. It is important to note that IVDD (Intervertebral Disc Disease) is not a single genetic marker but a disease outcome influenced by both genetics and environment. CDDY (Chondrodystrophy), caused by an FGF4 retrogene, is the marker linked to shortened limbs and premature disc degeneration, which increases IVDD risk. Dogs can be clear of CDDY and still develop IVDD, but the marker does raise likelihood. Breeding with carriers can be acceptable if carefully managed against clear dogs, ensuring health while maintaining genetic diversity. I can share her panel. I will link it here :)