Lavender foal syndrome (LFS)

Why test for LFS?

Lavender foal syndrome (LFS) can appear in pure- and part-bred Arabians. Horses affected by LFS often have a difficult birth, and cannot stand or even successfully roll onto their belly. They have episodes of rigidity where muscle spasms extend their neck, back and legs. Foals with LFS often have an unusual pale coat (hence the name of this disorder). There is currently no treatment for LFS.

LFS is an autosomal recessive disorder. Autosomal disorders are equally likely to affect male or female horses, while "recessive" means that a horse needs to inherit the LFS mutation from both its sire and its dam to be affected. Horses that have inherited the LFS mutation from just one parent are called LFS carriers, and do not have physical signs of this disorder.

Any LFS carrier can potentially produce a foal suffering from LFS. Fortunately this is easily avoided: you simply need to ensure that the prospective foal cannot inherit the LFS mutation from both its sire and its dam. Therefore, if you have a LFS carrier horse and it is mated to a LFS-clear horse there is no risk of the foal being affected with LFS.

We are still negotiating licensing for this test. Please contact us for pricing and availability.

Discounted LFS testing

We provide discounted testing for the Arabian Horse Society of Australia: find their testing order form here. We support testing via the AHSA because:

  • It allows the AHSA to keep a record of test results
  • The prevalence and distribution of CA, SCID and LFS carriers can be monitored
  • The AHSA is happy to test non-Arabian horses and ponies as well as full and part-bred Arabians

However, if you are in a hurry to find out your results the fastest option is to test directly with us.

Purchase equine DNA testing

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

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.

Inherited disorders

Pure and part-bred Arabian

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

Fell Ponies, Dale Ponies and Gypsy horses

$14 Foal immunodeficiency syndrome (FIS) more

Pure and part-bred Friesian

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

Warmbloods and related breeds

$14 Fragile foal syndrome (FFS) more

Various breeds

$14 Polysaccharide storage myopathy type 1 (PSSM1) more

Quarter horses and related breeds

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

Saddlebred horses and related breeds

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

Pure and part-bred Akhal Teke

$14 Naked foal syndrome (NFS) more

Pure and part-bred Connemara

$14 Hoof wall separation disease (HWSD) more

Coat colour tests

Base coat colours

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

Coat colour dilutions

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

Coat patterns

$9 Grey more
$9 Appaloosa or leopard (CSNB) more
$9 PATN1 more
$9 SW1 (Splashed White 1) more
$9 SW2 (Splashed White 2) more
$9 SW3 (Splashed White 3) more
$9 Frame overo (OLWS) more
$9 Tobiano more
$9 Sabino 1 more
$9 W13 dominant white (Miniatures) more
$9 W20 white markings more
$9 W22 dominant white (TB, Paint) more
$9 W25 dominant white (TB) more
$9 W26 dominant white (TB) more
$9 W27 dominant white (TB, Paint) more
$9 Roan marker more

Parentage/DNA profile

$33 DNA profile (microsatellite) more

Remember: most breed societies ask members to test through their society.

Parentage verification: