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Symptom
Explanation
Too high or low values for controls
1.
or patient samples compared to
expected values
2.
3.
4.
5.
6a. The control used is not suitable for the HemoCue Glucose
6b. The control is beyond its expiration date or has been stored
7.
8.
9.
Measurements on patient samples are
1.
higher or lower than anticipated
2.
3.
4.
5.
6.
The microcuvettes are damaged, beyond their expiration
date or have been improperly stored.
The optical eye of the microcuvette is contaminated.
The control has not been properly mixed and/or has not
reached room temperature.
Air bubbles are present in the cuvette.
The optronic unit is contaminated.
201 RT system.
incorrectly.
Incompletely filled microcuvette.
The measurement needs to be started no later than 40
seconds after filling the microcuvette.
Improper sampling technique.
Improper sampling technique.
The cuvettes are beyond their expiration date, damaged or
have been improperly stored.
The optical eye of the cuvette is contaminated.
Air bubbles in the cuvette
The optronic unit is dirty.
The calibration of the analyzer has changed.
Action
1.
Check the expiration date and the storage conditions of the microcuvettes.
2.
Measure the control/sample with a new cuvette.
3.
Make sure that the control is properly mixed and that it has reached room tem-
perature. If the problem continues, contact the manufacturer of the control.
4.
Check the microcuvette for air bubbles. Remeasure the control/sample with a
new microcuvette.
5.
Clean the optronic unit as instructed under Maintenance section.
6a. If a quality control test is to be performed, only use quality controls recom-
mended by HemoCue, see relevant package insert for more information.
6b. Check the expiration date and the storage conditions of the control. Repeat the
measurement with a new control/sample. If the problem continues, contact
the manufacturer of the control.
7.
Measure the control/sample with a new microcuvette.
8.
Measure the control/sample with a new microcuvette.
9.
Follow instructions in section Measuring.
1.
Follow instructions in section Measuring.
2.
Check the expiration date and the storage conditions of the cuvettes.
3.
Remeasure the sample with a new cuvette.
4.
Check the cuvette for air bubbles. Remeasure the sample with a new cuvette.
5.
Clean the optronic unit as described in the Maintenance section.
6.
The analyzer needs service. Contact your local distributor.
35
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