- American Cocker Spaniel
- American Staffordshire Terrier
- Australian Labradoodle
- Australian Shepherd
- Barbet
- Basset Hound
- Beagle
- Biewer
- Border Collie
- Border Terrier
- Boxer
- Bulldog
- Cavalier King Charles Spaniel
- Chihuahua
- Chinese Shar-pei
- Dachshund - Miniature Longhaired
- Dachshund - Miniature Smooth
- Dachshund - Miniature Wirehaired
- Dachshund - Standard Longhaired
- Dachshund - Standard Smooth
- Dachshund - Standard Wirehaired
- English Bulldog
- English Cocker Spaniel
- Field Spaniel
- French Bulldog
- German Longhaired Pointer
- German Shepherd Dog
- German Shorthaired Pointer
- German Wirehaired Pointer
- Goldendoodle
- Great Dane
- Havana Silk Dog
- Havanese
- Irish Setter
- Labradoodle
- Lhasa Apso
- Mastiff
- Miniature Schnauzer
- Most Breeds
- Newfoundland
- Olde English Bulldog
- Pointer
- Pomeranian
- Poodle (Miniature)
- Poodle (Standard)
- Poodle (Toy)
- Portuguese Podengo Pequenos
- Portuguese Water Dog
- Pug
- Saint Bernard
- Shar Pei
- Shetland Sheepdog
- Shih Tzu
- South African Mastiff (Boerboel)
- Whippet
- Wirehaired Pointing Griffon
- Yorkshire Terrier

Breeds Serviced
S Locus-testing for particolor, piebald, and extreme white
The S locus is responsible for the appearance of true white, non-pigmented areas in the coat. These can occur in a number of different patterns including piebald, Irish-spotting, pseudo-Irish, and solid, or nearly solid white.
A number of mutations have been identified in the gene at the S locus, and there relationship to one another is not completely understood, so complete S-locus testing is not possible.
We do offer testing for the "sp" version of the gene that causes piebald, particolor, flowered, Blenheim, landseer, and extreme white.