ITC VerifyNow System Platelet Reactivity Test - Manual (Page 76)

Troubleshooting - 10
Page 72 14439.C 03/2013 VerifyNow System User Manual | USA
No. Issue Description Resolution
21
Error - Low proximal
voltage
Test or EQC optical data
was outside expected
limits.
This event occurs during
a Failed EQC, and is
logged as Error 21 in the
event log.
Possible causes of this error include incomplete reagent reconstitution, a damaged EQC
device, faulty optical components, or excessive time between the blood draw into a syringe
and sample transfer to the sample tube or start of the test.
1) If running an EQC, verify the EQC device is not damaged.
2) If running a test, ensure that the sample was drawn correctly, that it was mixed
sufficiently but gently, and that the test was run within the time allotted for the test type (see
Chapter 6, Patient Testing).
3) Perform an EQC test (see Section 5.1). If the EQC is OK, attempt the test again.
4) If the EQC is not OK or the problem continues, call Technical Support.
22
Error - Low distal
voltage
Test or EQC optical data
was outside expected
limits .
Possible causes of this error include incomplete reagent reconstitution, a damaged EQC
device, faulty optical components, or excessive time between the blood draw into a syringe
and sample transfer to the sample tube or start of the test.
1) If running an EQC, verify the device is not damaged.
2) If running a test, ensure that the sample was drawn correctly, that it was mixed
sufficiently but gently, and that the test was run within the time allotted for the test type (see
Chapter 6, Patient Testing).
3) Perform an EQC test (see Section 5.1). If the EQC is OK, attempt the test again.
4) If the EQC is not OK or the problem continues, call Technical Support.
23
Error DC agreement (IIb/
IIIa only)
There was significant
variation between the
internal controls.
A redundant test using the same reagents is run in one of the detection wells of the IIb/IIIa
test device as a control. This error occurs when the DC values vary significantly between
the two channels.
1) Perform an EQC test (see Section 5.1). If the EQC is OK, run WQC Level 2 (see Section
5.2.2).
2) If the EQC is not OK or the problem continues, call Technical Support.
24
Attention - Channel
slope agreement (IIb/IIIa)
OR
Clinical control units
There was significant
variation between the
internal controls or the
clinical control unit (CU) is
out-of-range.
In these cases, the event may be associated with the blood sample and the following
causes should be investigated:
• The patient being tested is on an interfering substance. Refer to the package insert
for list of interfering substances.
• An improper blood collection technique was used to draw the sample.
• The discard tube was used to run the test.
• The patient being tested has a low platelet count, a low hematocrit or an inherited
platelet disorder.
• A WQC sample was run in Test mode rather than QC mode.
• The Greiner sample tube is expired.
If none of the above can be determined to be the cause, run WQC Level 2 (see Section
5.2.2). If the problem continues, call Technical Support.
25
Error - Mean agreement
(IIb/IIIa Only)
There was significant
variation between the
internal controls.
For the IIb/IIIa test, a redundant test using the same reagents is run using one of the
detection wells of the IIb/IIIa test device as a control. This error occurs when the mean
values vary significantly between the two channels.
1) Perform an EQC test (see Section 5.1). If the EQC is OK, run WQC Level 2 (see Section
5.2.2).
2) If the EQC is not OK or the problem continues, call Technical Support.
26
Attention - Premature
sample tube
The sample tube was
inserted prior to the
prompt being displayed.
1) Discard the sample and the test device. Do not reuse.
2) Re-draw sample and perform another test with a new test device
NOTE: Make sure to wait for the sample tube prompt before inserting the tube into
the test device.
27
Attention - Test type not
supported
The type of test device
inserted is not supported
by this version of the
instrument’s software.
This event may occur after a software upgrade or following changes to the test device.
1) Check the printing on the test device pouch to ensure it is the type of test device desired.
If not, obtain the correct test device type, and repeat the test. If yes, perform an EQC test
(see Section 5.1). When running EQC, make sure to select the QC prompt and not the test
prompt.
2) If EQC test is OK, attempt the test again.
3) If the EQC is not OK or problem continues, call Technical Support.