A diagnostic assay for detecting an occurrence of a stroke event in a mammalian subject. The assay comprises the steps of: (i) separating a plasma fraction from a blood sample collected from the mammalian subject; (ii) quantifying in the plasma fraction a L-glutamine hydroxylamine glutamyl transferase (L-GHGT) activity; (iii) quantifying in the plasma fraction a gamma glutamyl hydroxamate synthetase (GGHS) activity; (iv) adding together or alternatively calculating the combinatorial probability for the quantified L-GHGT activity and the quantified GGHS activity to produce a value for the net glutamine synthetase activity, and (v) correlating the net glutamine synthetase activity value with net glutamine synthetase activity values from healthy subjects to detect an occurrence of a stroke event in the mammalian subject. Also disclosed are kits comprising reagents and instructions for performing a diagnostic assay to detect and quantify L-GHGT activity and/or GGHS activity.

University of Manitoba

l glutamine/insult

Biomarkers for rapid detection of an occurrence of a stroke event

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