Section 7: Calibration And Quality Control; Calibration; Quality Control Features - Abaxis VetScan vs2 Operator's Manual

Section 7
Calibration and
Quality Control
7.1

Calibration

The VetScan VS2 Analyzer is self-calibrating. A bar code on the reagent
rotor contains the information needed to calibrate the rotor when run.
Additionally, each reagent bead used in the rotor is calibrated to a refer-
ence method and/or reference material. This and the procedures in the
previous sections of this manual help ensure accurate results.
7.2

Quality Control Features

The analyzer includes quality control features such as optical sensing
and electronic feedback systems, to ensure that accurate results are
reported. The analyzer tests its internal components and the reagent
rotors whenever the power is turned on or a rotor is inserted. Addition-
ally, the analyzer continues to perform tests during analysis. Messages
shown on the display or printed in the results warn of analyzer malfunc-
tions and possible errors, or explain why no results are reported.
1. Intelligent Quality Control (iQC)
The analyzer performs an iQC test whenever power is turned on.
iQC ensures that all optics, flash, and circuit board components
are functioning properly and verifies the memory functions. The
analyzer performs analysis only after iQC confirms that all com-
ponents are functional. A hardware malfunction message appears
on the display if any component malfunctions.
The analyzer's software incorporates statistical methods to
ensure accurate results. The lamp flashes up to 13 time points for
rate chemistries, and typically three time points for endpoint
chemistries. To ensure that the analyzer is functioning properly,
the distribution of flashes at each time point is analyzed, and the
standard deviation is compared to a pre-determined limit.
Calibration and Quality Control 7-1