Splashed white*

Characteristic and trait of inheritance

Splashed white is a variable white spotting pattern characterized primarily by extremely large blaze, extended white markings in legs, variable white spotting in belly, and often blue eyes. Some, but not all, splashed white horses are also deaf. Recent research has identified 3 mutations – SW-1, SW-2 and SW-3 - that cause splashed white phenotypes in horses. SW-1 has been found in several breeds - Quarter Horse, Paint, Trakehner, Miniature Horse, Shetland Pony and Icelandic Horse – and may be present in other breeds as well. Horses homozygous for SW-1 (SW1/SW1) have been identified, which suggests that this mutation is not homozygous lethal. SW-2 and the rare SW-3 occur exclusively in certain lines of Quarter Horses and Paints. Based on predictions from other species, SW-2 and SW-3 may be homozygous lethals and thus matings of two horses that carry SW-2 or SW-3 should be avoided.
Horses that carry combinations of the splashed white mutations, tobiano or lethal white overo can display extensive white patterning or be white.


All breed

Test duration

3-4 weeks after arrival of the sample in the lab


The DNA test is performed out of EDTA blood or or 20-30 hair roots from mane or tail. Test kits can be ordered free of charge. (order-form). If hair is sent in, possibly the genetic material is not sufficient to run the test. In this case it would be best to send in an EDTA blood sample.

Testing procedure

Please send in your sample together with the lab order genetic. Results will be transmitted optionally via post, fax or email. After completion of the test you will receive a separate invoice. Payment can be made via credit card or bank transfer.
Breeding club discounts apply if a copy of the membership card is sent together with the respective samples. Due to administrative reasons the invoiced price can not be altered subsequently.


Please contact our molecular biology team for further questions.

Steubenstraße 4
D-97688 Bad Kissingen

Telefon: +49 (0)971 72020
Fax: +49 (0)971 68546
E-Mail: info@labogen.com


 back to genetic characteristics

*) Partnerlaboratory
Wir sind Mitglied:
Sie uns!