University of York

Sun Pharmaceutical Industries Australia Limited

Tony Robert Larson

Ian Alexander Graham

Tracy Carol Walker

Fergus Meade

The invention provides a method for measuring an acyl coenzyme A (acyl CoA) ester or esters in a sample, comprising the steps of: a) forming a reaction mixture comprising the sample to be tested and a derivatizing agent; b) allowing the sample and said derivatizing agent to react, so as to form a fluorescent derivative(s) of any acyl CoA ester(s) present in the sample; and c) determining a level of said fluorescent derivative(s). Further provided is an assay for determining the level of an acyl coenzyme A (acyl CoA) ester or esters in a test sample, comprising the steps: a) obtaining the test sample from an organism to be tested; b) forming a reaction mixture comprising the sample to be tested and a derivatizing agent; c) allowing the sample and said derivatizing agent to react, so as to form a fluorescent derivative(s) of any acyl CoA ester(s) present in the sample; d) determining a level of said fluorescent derivative(s) ester(s); and e) comparing the level of said fluorescent derivative(s) in the test sample with a level of said fluorescent derivative(s) in a normal sample, such that a significant difference in the level of said fluorescent derivative(s) between the test sample and normal sample may be predictive of a fatty acid oxidation disorder in said organism. Also disclosed is a kit for use with the assay of the present invention.

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Leeds, United Kingdom

Tony Robert Larson