Genetic disorders occur when a mutation of one or more nucleotides in a gene have an effect on the body not normally seen. For each disorder, there may be more than one genetic mutation that causes or is in some way linked to this disorder. Not all mutations linked to a disorder are the direct cause. One example of such a genetic disorder in humans is cystic fibrosis which causes respiratory problems and leads to bacterial infections. 70% of Cystic Fibrosis cases are caused by one mutation, a loss of three nucleotides. At this time 1200 additional mutations have been identified that are also linked to cystic fibrosis. For horses, the certain genetic disorders have been linked to single mutations. Though as in the case of cystic fibrosis in humans, there is a strong possibility of there being additional mutations involved in the same genetic disorder.

Tests offered involving genetic disorders:

Hyperkalemic Periodic Paralysis (HYPP)

Hereditary Equine Regional Dermal Asthenia (HERDA)

Lethal White Overo (LWO)