Lacher D A, Connelly D P
Department of Pathology, Medical College of Ohio, Toledo 43699.
Clin Chem. 1988 Oct;34(10):1966-70.
We compared delta and "rate" check methods for 12 selected chemistry tests. Rate checks were determined by dividing delta checks by inter-specimen interval time. The delta and rate check methods were based on differences and percent change of untransformed and absolute value-transformed values. The distribution of delta differences was not symmetrical for calcium, alkaline phosphatase, aspartate aminotransferase, or phosphorus, which led to different check limits between untransformed and absolute value-transformed methods. The dispersion of rate checks was large. The interval time between two consecutive tests was multimodal, which probably reflected adherence to fixed testing protocols.
我们比较了12项选定化学检测项目的差值和“速率”检查方法。速率检查是通过将差值检查结果除以标本间间隔时间来确定的。差值和速率检查方法基于未转换值和绝对值转换值的差异及百分比变化。钙、碱性磷酸酶、天冬氨酸氨基转移酶或磷的差值分布不对称，这导致未转换方法和绝对值转换方法之间的检查限不同。速率检查的离散度较大。两次连续检测之间的间隔时间呈多峰分布，这可能反映了对固定检测方案的遵循情况。
