HemoCue Albumin 201, Operating Manual

Page: 25 / 36

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Symptom Explanation Action
Too high or too low values for
controls or patient samples
compared to expected values. 1. The cuvettes are damaged, beyond their expi-
ration date or have been improperly stored.
2. The optical eye of the cuvette is contaminated.
3. The control has not been properly mixed and/
or has not reached room temperature.
4. Air bubbles are present in the cuvette.
5. The optical unit is contaminated.
6a. The control used is not suitable for the
HemoCue Albumin system.
6b. The control is beyond its expiration date or has
been stored incorrectly.
7. Incompletely filled cuvette.
8. The measurement needs to be started no later
than 30 seconds after filling the microcuvette.
9. Use of frozen specimen/control.
1. Check the expiration date and the storage conditions
of the cuvettes.
2. Measure the control/sample with a new cuvette.
3. Make sure that the control is properly mixed and that
it has reached room temperature.
4. Check the cuvette for air bubbles.
Remeasure the control/sample with a new cuvette.
5. Clean the optical unit as instructed under
“Maintenance”.
6a. If a quality control test is to be performed, only use controls
recommended 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.
7. Measure the control/sample with a new cuvette. It is
important that the cuvette “snaps” properly into the
cuvette holder.
8. Measure the control/sample with a new cuvette.
9. The system is intended to be used with fresh specimen. Use of
frozen specimen should be avoided as this may affect results.