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Troubleshooting
12 Troubleshooting
12.1 Strip checking events
Errors in sample handling and testing procedure may lead to false results. In
order to improve the diagnostic decision making process advanced strip recog-
nition features were introduced in DocUReader 2 Pro.
The outcome of these features is categorized into three groups:
•
R1. Measurement is not started
•
R2. Result is saved with a warning message
•
R3. Result is saved with an error code
The analyzer automatically recognizes the following events during testing:
Feature
Outcome
Time of action
slipped test strip
R3
after third failed check
(partially) dry strip
R2/R3
after testing
upside-down strip
R3
before incubation period
background light too strong
R2/R3
during measurement
If the result is saved with a message, the pad values are listed and the code and
the description of the warning is inserted into a new comment field of the result.
To search for results with a warning, use the “with comment” extra filter in the
database (see “8.2 Setting up filters to find specific results”).
ǽ
Please note that this filter will also list results with comments inserted by the
user.
If the result is saved with an error, only the error code is visible. To search for
results with an error code, use the “false meas.” extra filter in the database.
Slipped strip
The front of the test strip has to be at the leading edge of the test strip tray. Sys-
tems check for misposition:
1. Before the incubation time: Warning window is displayed with two choices:
1. Drop testing and restart with new strip; 2. Reposition strip and repeat meas-
urement. Choice is available during the incubation time.
2. Before the measurement: Warning window is displayed with two choices, but
repeating is limited for 10 seconds. In case of successful repositioning the
result will be flagged as ‘Overincubate’ (R2). After 10 seconds only ‘cancel
testing’ option is available.
3. After the measurement (R3): Result is stored with an error code (‘Measurement
error: Strip position error’)
Partially dry strip
The evaluation takes place after the measurement based on the reflectance data
of the last pad. Based on the configuration settings, the result is saved either
with a flag (R2) or an error code (R3).
