Piccolo Xpress Manuel De L'opérateur page 67

e. Select
eGFR Xpress Operation
eGFR (estimated Glomerular Filtration Rate) is turned off by default, and is enabled in the Advanced
Settings screen (see
When eGFR is enabled, choosing Patient sample type prompts you for Age, Race and Gender when-
ever a disc includes CRE. The analyzer requires information for these three items to perform the calcu-
lations: if no information or "unknown" is entered, the displayed result for eGFR will be N/C and an
error report is printed automatically."
When eGFR is off, eGFR shows a result of
(creatinine).
CRE
The official units for eGFR are mL/min/1.73 m
4.15 Running Controls
A control is a biological sample or solution with a suitably contrived matrix that is analyzed for pur-
poses of quality control. The composition of the matrix must be such that the solution closely matches
that of the biological specimen for characteristics of importance to the analyzer. Control materials need
to be stable and available in sufficient volumes in multiple portions and over an extended period. Many
control products are available commercially. Assayed controls also come with expected values of the
analytes for guidance.
Abaxis recommends control testing as follows:
at least every 30 days

whenever laboratory conditions have changed significantly

when training or retraining of personnel is indicated

when test results do not match patient symptoms or clinical findings

with each new lot (CLIA waived tests in waived status labs)

.
eGFR
step 7, above) under Analyte Options.
Configuring the Analyzer
(Not Calculated) on the results printout, directly below
N/C
2
. The analyzer uses mL/min to enable simpler printing.
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