血中カルシウム濃度の各種副甲状腺ホルモン（ＰＴＨ）測定キットの測定値に及ぼす影響 The study in the relationship between serum calcium and serum parathyroid hormone(PTH) by employing the various kits of PTH assay.

<I>In order to evaluate the influences of serum PTH assay in the various concentrations of serum calcium, we divided into three groups which serum calcium had below 8.0 mg/dl, 8.2 mg/dl to 9.8 mg/dl and above 10.0 mg/dl at random samples and assayed PTH in serum sample, using various kits of PTH assay obtained from commercial sources.</I><BR><I>Our results suggested that the measurement of serum PTH influenced by the concentration of serum calcium and therefore, should be taken an attention of serum calcium in each sample.</I>