The most common endocrine problems in horses are pituitary pars intermedia dysfunction (PPID) (also known as Equine Cushing’s disease) and equine metabolic syndrome (EMS or insulin resistance). Horses with PPID often have long, curly hair coats, a delay in coat shedding, laminitis (founder), and chronic infections. Horses with obesity and EMS can have performance problems, breeding problems, and laminitis. The internal medicine specialists at Auburn have conducted many clinical studies about the diagnosis of endocrine diseases in horses and are leaders in the field. Our endocrine diagnostic laboratory can measure ACTH, insulin, T3, T4, cortisol and other hormones. We have determined seasonal reference ranges for several hormones and consultations with our equine medicine specialists can be arranged for veterinarians who use our laboratory for their own samples. We can help you with diagnosis of these problems and treatment strategies so that you can enjoy your horse through the geriatric years.