The Clinical Measurement Ontology (CMO), Measurement Methods Ontology (MMO), and Experimental Condition Ontology (XCO) are currently being developed at the Rat Genome Database. For more information about these vocabularies please see Shimoyama et al. Three ontologies to define phenotype measurement data. Front Genet. 2012;3:87. Epub 2012 May 28 or contact us (http://rgd.mcw.edu/contact/index.shtml).
A solid phase colorimetric assay utilizing a strip of paper, or of plastic with one or more attached pads of paper, impregnated with a reagent that specifically reacts with potassium ions. The strip is dipped into the urine sample, allowed to react for a specified period of time and the results assessed by a visual comparison with a standard chromatic/color scale.