Verification slowness and failure – Luminex MAGPIX Installation and Hardware User (IVD) User Manual
Page 78
Luminex IVD MAGPIX Hardware Installation and User Manual
66
Verification Slowness and Failure
Like calibration problems, verification problems can have a variety of causes.
TABLE 7. Verification Slowness and Failure
Possible Cause
Corrective Action
Possible Verification Microsphere Causes:
The verification microspheres are not fully
suspended.
Vortex the verification vials to resuspend
the microspheres.
The wrong lot number or target values
were entered in the software.
Correct the lot number and target values
in the software.
The instrument verification microspheres
are in the wrong well.
Change the well setting in the software.
There are not enough verification
microspheres in the well.
Add at least five drops of verification
microspheres to the well. For accurate
drop volume, hold the vial upside down at
a 90 degree angle to the microtiter plate
while dispensing them.
You are using the incorrect verification
microspheres.
Verify that you are using the xMAP
MAGPIX Performance Verification Kit.
The verification lot is expired.
Use an unexpired bottle of verification
microspheres.
The verification microspheres have been
diluted.
Substitute undiluted verification
microspheres.
Possible Sample Probe Causes:
The sample probe height is incorrect.
Perform an automatic sample probe
height adjustment.
The sample probe is clogged.
The sample valve is faulty.
Contact Technical Support.
Other Possible Causes:
There is carryover from the calibrators or
the previous assay.
See “Carryover Problems” on page 68.
There is air in the instrument.
Verify the sample probe height. Use the
software to run a prime command three
times, an alcohol flush command twice,
then a wash command three times with
distilled water.
Make sure the Drive Fluid coil is not
pinched.
There is a problem internal to the
instrument.
Review the log of calibration reports.
Check for dramatic changes in
temperature or voltage. If any of these are
present, contact Technical Support.