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Oklahoma State University

Large Animal Clinical Trials

Seeking overweight horses and ponies with cresty necks

Drs. Gilliam and Lovett seeking overweight horses and ponies with cresty necks (body condition score at least 7.5/9), aka 'easy-keeper' types. A history of laminitis is acceptable, however the enrolled horses need to be otherwise systemically healthy (no other co-morbidities, not actively laminitic, no medications).

Clinical Trial Information:

Enrolled horses will have an oral sugar test performed (Karo syrup administered by mouth and three blood collection time points) to assess for whether the individual has insulin dysregulation. The second part of the study is assessing the enrolled horses' coagulation profiles compared to control horses via thromboelastography (TEG) and traditional coagulation testing (PT/PTT). This also includes a complete blood count, platelet count, fibrinogen and D-dimer testing - of no cost to the owner.

Ideally horses are to be <15-20 years of age, however if the horse fits the above descriptions and is >15 years old then an ACTH test for PPID will be performed. We will share all the test results with the owners once results are obtained. Essentially, this project is primarily based on blood samples, no other invasive procedures are required. 


If you would like to participate or have questions, please contact Dr. Amy Lovett at or Dr. Lyndi Gilliam at