PROTOCOL

1. Fast the horse for 18 to 24 hours and take a basal oxalate fluoride blood sample.
1. Administer 1g/kg glucose as a 10% solution by stomach tube.
1. Collect oxalate fluoride blood samples at 30, 60, 90, 120, 150, 180, 210 and 240 minutes post glucose administration.

In a normal horse, peak concentrations of glucose of approximately twice the resting concentration occur at 60-120 minutes post administration. Concentrations should return to normal by 6 hours post administration.
 

Test Code	Test Name and Description	Sample
GTT	Glucose Tolerance/Absorption Test	8 x OXF

REFERENCE

Eades, S.C. ET AL (1995) The Gastrointestinal and Digestive System. In: The Equine Manual. Eds. Higgins, A.J. and Wright, I.M. W.B. Saunders Company Ltd. London p 504 - 505.