abstract |
A dry test piece for measuring a magnesium concentration in a biological fluid, which comprises the following reagent components (i) to (iii): (i) o-cresolphthalein complexon; (ii) O,O'-bis(2-aminophenyl)ethylene glycol-N,N,N',N'-tetraacetic acid GEDTA (EGTA); and (iii) a pH buffer agent of pH 8.5 to 11.0. |