Coat Color Testing - D Locus

A mutation in the melanophilin (MLPH) gene is the cause of coat color dilution. Two copies of 'd' will dilute black pigment to grey/blue, or red pigment to cream/buff.

VetNostic Laboratories’ genetic test for the D Locus can reliably identify:

D/D: Full Color
D/d: Dilute Carrier
d/d: Dilute

Volume discounts are available for Breeder Clubs, etc. Please contact us for more information.

Certification of Results

VetNostic Laboratories® will provide a certificate for each test result.


The following sample(s) can be submitted for the testing:
- Cheek swabs

Reporting Results

Test results can be viewed through your VetNostic Laboratories® web account within 10 business days from the moment the samples arrive at the laboratory. Results can also be reported via Mail, E-Mail, or Fax.

DNA Storage

VetNostic Laboratories provides DNA storage for all of our extracted specimens. If a customer wishes to perform an additional test on a previously extracted specimen they can simply call or email us with the animal's name and/or VNL number along with the test to be performed. This storage is provided free of charge.

Australian Shepherd
Border Collie
Boston Terrier
Brussels Griffon
Carlin Pinscher
Doberman Pinscher
English Bulldog
French Bulldog
German Pinscher
German Shepherd Dog
Great Dane
Labrador Retriever
Pembroke Welsh Corgi
Shih Tzu
Tibetan Mastiff
Tibetan Spaniel
Tibetan Terrier
Yorkshire Terrier

Price: $40.00
Number of dogs to be tested: Add To Cart