Comparison of Two Diagnostic Methods to Detect Insulin Dysregulation in Horses Under Field Conditions.

This research article discusses a comparison of two methods, the Basal Insulin Concentration (BIC) and a practical version of an Oral Sugar Test (OST), to detect insulin dysregulation in horses. The OST was found to be significantly better than the BIC and therefore more recommendable for use in daily veterinary practice. The researchers also found that obese horses and certain breeds are more prone to developing insulin dysregulation.

Comparison of Diagnostic Methods for Insulin Dysregulation

• The researchers compared the effectiveness of two diagnostic methods – the Basal Insulin Concentration (BIC) and an Oral Sugar Test (OST) – in detecting insulin dysregulation (ID) in horses.
• Insulin dysregulation can lead to laminitis, a serious health condition in horses, hence the need for reliable testing procedures.
• The study included 90 horses and the researchers examined those classified as ID positive, ID suspect and ID not diagnosed.
• They analysed and compared the basal insulin concentration, basal glucose concentration, and insulin and glucose concentration after conducting the oral sugar test.

Results of Diagnostic Method Comparison

• The OST detected significantly more ID-positive cases than the BIC at the same level of specificity, proving to be a more effective method.
• While a lower cut-off could increase the sensitivity of BIC, it came at the cost of significantly lower specificity.
• Therefore, the OST proved to be more suitable for use in daily veterinary practice as a screening test for insulin dysregulation.

Relationship between Body Conditions and Insulin Dysregulation

• Furthermore, the researchers explored the relationship between body condition and breed type with glucose and insulin concentration after conducting the OST.
• Horses were classified into lean, moderate, or obese categories and into ‘easy keeper breeds’ versus ‘non-easy keeper breeds’.
• Their findings affirmed the general assumption that obese horses and ‘easy keeper breeds’ are more susceptible to the development of insulin dysregulation.