A kit for serum calcium determination (Calcium Rapid Stat Kit), based on a methyl thymol blue method, has been investigated and the results compared with those obtained from an AutoAnalyzer cresolphthalein complexone method.
The kit technique is simple, requires a small amount of serum and has a better precision than the AutoAnalyzer method, with which it correlates well. The standards supplied should be checked before use.
References
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American Association of Clinical Chemists. AACC policy regarding reagent sets and kits. Clin. Chem.12 (1966) 43.
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GindlerE. M.KingJ. D.Rapid colorimetric determination of calcium in biologic fluids with methylthymol blue. Amer. J. Clin. Path.58 (1972) 376.
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GitelmanH. J.An improved automated procedure for the determination of calcium in biological specimens. Anal. Biochem.18 (1967) 521.
