Dairy One Forage Laboratory
Providing hay, forage, feed and water analysis.
Equi-Analytical - the Equine Division of Dairy One.
Extensive information about hay analysis; hay corer purchase package. Good price on forage sampler (corer) which includes a hay analysis.
eNasco - Farm and Ranch Supply
Penn State forage sampler plus accessories (extra tips, case, etc.)
Note ~ endogenous ACTH (single draw) is the preferred test for establishing Cushing’s disease. This test requires special handling (spinning, freezing, overnight shipping) but does not involve the injection of Dexamethasone which can trigger laminitis in a susceptible equine.
Insulin/glucose testing for IR should be drawn while the horse is receiving their normal hay ration, not after fasting. See the http://www.ecirhorse.com/ website for additional information on Cushing’s and IR testing.
When doing serial studies to monitor medication and progress, the same laboratory should be used.
Cornell – NYS Animal Health Diagnostic Center
Preferred laboratory for endocrinology studies, endogenous ACTH, Insulin, Glucose and Selenium testing
Michigan State - Diagnostic Center for Population and Animal Health
Laboratory for endocrinology studies, endogenous ACTH, Insulin, Glucose and Selenium testing