Multivariate delta check method for detecting specimen mix-up.
These detection schemes, referred to as limit checks and delta checks, respectively, are in common use.
Therefore, much has been done to try to prevent it, and several result verification methods, such as delta check
(1) and multivariate delta check
(2), have been developed to detect it.
Delta check violations should be investigated before reporting the current value.
Delta checks for random error detection in hematology tests.
limits that have been recommended for sodium are 5% and 10 mmol/L.
We would like to begin by using delta check
values that other places have used.
We picked up the error when a delta check
was done on one of the patients when a follow-up lab was ordered.
Initially, a delta check
is performed at the CBC workstation.
Recently, such delta checks
helped CCH identify hemolytic uremic syndrome (Ecoli 0157) in a child admitted to the emergency room.
Our lab computer reports delta checks
- significant changes in consecutive lab values for individuals - to the instrument operators at the time of analyses.
Analysis encompasses such classic QC measures as controls, duplicate runs, instrument checks, and delta checks
of previous results.