Rate and delta checks compared for selected chemistry tests.
- 1 October 1988
- journal article
- research article
- Published by Oxford University Press (OUP) in Clinical Chemistry
- Vol. 34 (10) , 1966-1970
- https://doi.org/10.1093/clinchem/34.10.1966
Abstract
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.This publication has 7 references indexed in Scilit:
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