Macular Corneal Dystrophy


Turnaround: 10-15 business days

Not sure how the process works? Have a read of our Frequently Asked Questions.

The DNA test for Macular Corneal Dystrophy (MCD) is ideal for breeders and owners who want the reassurance of genetic health testing.

The guideline turnaround time for single tests is approximately 10-12 working days after the swab arrives at the lab.

If you need more than two tests it is often more cost-effective to order the relevant breed package.


MCD is an inherited eye disease that causes problems with a dog's sight. In affected dogs, a build up of carbohydrate causes the surface of the eye (the cornea) to become cloudy. 

Dogs with MCD usually show signs around four to six years old. Affected dogs will have cloudy eyes that may have grey or white spots on the surface. As their eyes become cloudier, they may have problems seeing and may be more likely to bump into things, walk more slowly or may be more nervous when visiting new places. 


This test is also included in the following breed packages:

  • Labrador (Essential)
  • Labrador (STGD and MCD only)