title: Observations on diagnostic kits for the determination of calcium in serum.
mesh_terms: D002118:Calcium / Q000097:blood*; D003124:Colorimetry; D004355:Drug Stability; D004492:Edetic Acid; D005069:Evaluation Studies as Topic; D006801:Humans; D007202:Indicators and Reagents; D007811:Lanthanum; D008722:Methods; D013054:Spectrophotometry, Atomic; D013997:Time Factors
chemical_list: D007202:Indicators and Reagents; D007811:Lanthanum; D004492:Edetic Acid; D002118:Calcium