Reagent strip failure.
D000328:Adult; D016883:Diabetic Ketoacidosis / Q000097:blood; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D007202:Indicators and Reagents / Q000592:standards*; D007659:Ketones / Q000097:blood*; D011934:Reagent Strips / Q000592:standards*
D007202:Indicators and Reagents; D007659:Ketones; D011934:Reagent Strips