Animal DNA Services
Veterinary Diagnostics Center
1-800-625-0874

DNA HYPP Testing

DDC Veterinary is offering equine breeders fast, affordable DNA testing for Hyperkalemic Periodic Paralysis (HYPP).

HYPP (also known as Impressive Syndrome) is an inherited autosomal dominant disorder which affects sodium channels in muscle cells and the ability to regulate potassium levels in the blood. This inherited disease is characterized by uncontrollable muscle twitching and substantial muscle weakness or paralysis among affected horses. HYPP is a dominant disorder; therefore heterozygotes bred to genotypically normal horses will still likely produce clinically affected offspring 50% of the time.

Testing can be performed on hair samples (with the follicle intact). You may download instructions for collecting samples. We will provide you with a detailed DNA report showing your horse's genotype for HYPP.

Results are accepted by the American Quarter Horse Association.

To set up testing, call 1-800-625-0874, or order your HYPP Disease Test Online.