Name: LFS Lavender Foal Syndrome
Brand: Equigerminal
Price: 38.0 GBP

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LFS Lavender Foal Syndrome

DNA test DNA test for the Lavender Foal Syndrome (LFS) – Pure and part-bred Arab horses. This test verifies the presence...

£38.00

Sample Requirements

30 to 40 - hair roots - envelope or 5 mL - blood - K3 EDTA tube

Send your sample by regular mail or express delivery to:

Equigerminal Lab HIESE
Rua da Quinta do Sobreiro Nº25
3230-343 Penela, Portugal

Turnaround Time

2 to 5 working days

About the test

This DNA test verifies the presence of the Lavender Foal Syndrome (LFS) genetic variant.

LFS is an autosomal recessive genetic disorder primarily found in Purebred and Part-bred Arabian horses.

Why test?

This genetic test helps breeders identify horses that are clear, carriers or affected by Lavender Foal Syndrome.

Testing supports informed breeding decisions, helping prevent the birth of affected foals.

Testing is particularly recommended for Purebred and Part-bred Arabian horses or horses with Arabian ancestry.

How it works

🛒 Purchase the Test: Select and buy the test online.

📧 Receive Instructions: After payment confirmation, receive instructions for sample collection.

✨ Sample Collection: Your veterinarian collects hair roots or a blood sample.

📄 Download Submission Form: Download the printable submission form.

📮 Send Samples: Send your samples by regular mail or express delivery to:

Equigerminal Lab HIESE
Rua da Quinta do Sobreiro Nº25
3230-343 Penela, Portugal

📄 Receive Results: Get your result certificate by email.

Results

The DNA test verifies the presence of the recessive LFS gene and presents results as one of the following:

N/– Non-carrier of the LFS gene. Tested negative for the LFS gene.
N/LFS - Heterozygous horse for LFS, both the normal and LFS alleles were detected. The horse is a carrier of LFS genetic disorder and there is a 50% chance this horse will pass a LFS allele to its offspring
LFS/ – Homozygous horse for LFS, carrier of two copies of the LFS gene. The horse is affected with the LFS genetic disorder.

Additional information

Lavender Foal Syndrome (LFS) is a severe inherited neurological disorder affecting primarily Arabian horses.

Affected foals are typically born with a diluted coat colour that may appear pale lavender, silver or pink.

Clinical signs include:

Difficulty standing shortly after birth.
Muscle rigidity.
Extension of the limbs, neck and back.
Seizure-like episodes.
Severe neurological dysfunction.

Affected foals usually require euthanasia within days or weeks after birth due to the severity of the disease.

Because LFS is inherited as an autosomal recessive trait, affected foals inherit one copy of the mutation from each parent.

Carrier horses (N/LFS) appear completely healthy but can transmit the mutation to approximately 50% of their offspring.

The LFS mutation has only been identified in horses with Arabian ancestry. Routine testing is therefore recommended for Purebred and Part-bred Arabians or when pedigree information is uncertain.

FAQs

Which samples can be submitted?

The test can be performed using 30–40 hair roots or 5 mL of blood collected in a K3 EDTA tube.

Which horses should be tested?

Testing is recommended for Purebred and Part-bred Arabian horses, horses with Arabian ancestry, and breeding animals where pedigree is uncertain.

What do the results mean?

N/N: Horse is free of the LFS mutation.
N/LFS: Horse is a healthy carrier and may pass the mutation to 50% of its offspring.
LFS/LFS: Horse is genetically affected by Lavender Foal Syndrome.

Can carrier horses develop the disease?

No. Carrier horses (N/LFS) are clinically normal but can transmit the mutation to their offspring.

How long does it take to receive the results?

Results are available within 2 to 5 working days after sample arrival at the laboratory.