DNA test - CHG (Congenital hypothyroidism with goiter)

Details about the disease

Congenital hypothyroidism with goiter (CHG) is a condition which prevents the body from effectively producing thyroid hormones, which are required for development and growing. A delay in growth may be noticed around 2 weeks of age, when unaffected puppies undergo a growth spurt.

Clinical signs

Affected puppies may suffer from fits or may die at a very young age. Puppies that are carefully nursed may have a delay in the age at which their eyes and ear canals open, while hearing and brain development may be affected. The thyroid gland can become enlarged and will often appear as a swelling on the throat, known as a goiter. Puppies that survive may have irreversible dwarfism.

How is it inherited?

The disease is described as an autosomal-recessive condition. This means that a dog must inherit two copies of an abnormal gene (one from its mother and one from its father) before its health is affected. A dog that inherits only one copy of the abnormal gene (from its mother or its father) will have no signs of the disease, but will be a carrier and may pass the gene on to any offspring.

Which laboratories test for this condition?

Two lists of laboratories that test for CHG can be found below.

Laboratories that send a copy of your dog's results straight to The Kennel Club, so you don't have to.
Laboratories Contact details

Kennel Club CombiBreed (UK)

Available as part of an all-on one health test package for Spanish Water Dogs.

Read more about CombiBreed
Laboklin (UK) Phone: 0161 282 3066
Email: Laboklin
Web: www.laboklin.co.uk
Pet Genetics Lab (UK) Phone: 01624 679 720
Email: Pet Genetics Lab
Web: www.petgeneticslab.co.uk  

Where will your dog's results be published?

DNA test results from these laboratories are sent directly to The Kennel Club and are recorded on to the dog's record in the registration database, and are published:

Laboratories that do not send a copy of your dog's results to The Kennel Club. You'll need to do this yourself.
Laboratories Contact details
Van Haeringen (Holland) Email Van Haeringen
Web: www.vhlgenetics.com

How to submit DNA test results to The Kennel Club

The laboratories listed above do not send your dog's DNA test results to The Kennel Club. To have these results placed on your dog's record please submit them yourself by scanning and emailing them to our health results team.

What we require on the results certificate

Please note that we require at least two forms of identification on the result certificate. These must include the dog's microchip or tattoo number along with either the dog's registered name or registered number. Results without these details cannot be accepted by us.

Where will your dog's results be published once you have submitted them?

DNA test results received by The Kennel Club are recorded on to the dog's record in the registration database, and are published:

How to responsibly breed from your DNA-tested dog

If, once your dog is DNA tested, you would like to find out what their DNA test results mean, or how to select the right mate to avoid producing affected puppies, then please read our breeding advice and DNA testing information.

How to find out if a potential mate has been DNA tested

The Kennel Club’s on the Health Test Results Finder allows you to find the results of DNA tests carried out as part of The Kennel Club's official DNA testing schemes for any dog on the The Kennel Club’s Breed Register.