Extension, red and black pigment

Why test for extension?

Most horses are chestnut, black or bay/brown*. Many other unusual coat colours come about when these basic colours are modified. Just two genes control these basic coat colours.

The extension gene (MC1R) controls the production of red pigment (i.e. to produce the chestnut coat colour) vs black pigment (i.e. to produce black or bay/brown coat colours). If your horse or pony is bay/brown or black, you will need to use genetic testing to determine whether they have one vs two copies of the version of this gene that produces black pigment.

Genetic testing for these genes lets you predict and advertise what colour foals your horse or pony might produce. Read more about chestnut, black and bay/brown and ask questions here...

Bay horses

Purchase equine DNA testing

Price per horse = sample processing ($40) + tests

Coat colour tests

Base coat colours

$9 Agouti (the bay factor) ...read more
$9 Extension (red/black) ...read more

Coat colour dilutions

$9 Cream ...read more
$9 Dun and d1 ...read more
$9 Silver ...read more
$9 Champagne ...read more
$9 Pearl ...read more

Coat patterns

$9 Grey ...read more
$9 Appaloosa or leopard (CSNB) ...read more
$9 PATN1 ...read more
$9 SW1 (Splashed White 1) ...read more
$9 SW2 (Splashed White 2) ...read more
$9 Frame overo (OLWS) ...read more
$9 Tobiano ...read more
$9 Sabino 1 ...read more
$9 W13 dominant white ...read more
$9 W20 white markings ...read more
$9 Roan marker ...read more

Inherited disorders

Pure and part-bred Arabian

$14 Cerebellar abiotrophy (CA) ...read more
$14 Severe combined immune deficiency (SCID) ...read more
$14 Lavender foal syndrome (LFS) ...read more

Fell Ponies, Dale Ponies and Gypsy horses

$14 Foal immunodeficiency syndrome (FIS) ...read more

Pure and part-bred Friesian

$19 Friesian dwarfism ...read more
$14 Hydrocephalus (Friesian and other breeds) ...read more

Various breeds

$14 Polysaccharide storage myopathy type 1 (PSSM1) ...read more

Quarter horses and related breeds

$14 Malignant hyperthermia (MH) ...read more
$14 Hyperkalemic periodic paralysis (HYPP) ...read more
$14 Hereditary equine regional dermal asthenia (HERDA) ...read more
$19 Glycogen branching enzyme deficiency (GBED) ...read more

Saddlebred horses and related breeds

$14 Junctional epidermolysis bullosa, Saddlebred form (JEB) ...read more

Parentage/DNA profile

$33 DNA profile (microsatellite) ...read more

Please check with your breed society before
testing for registration; some organise
their own parentage testing.
This order includes:
Samples from offspring and both parents
Samples from offspring and one parent
Offspring sample, parent profile certificates
Offspring sample; parents on file
One sample; no parentage verification

How many horses do you want to test?

Discount code:

Need different tests for each horse? You can customise your choices for each horse on next page.