HemoCue WBC, Operating Manual

Page: 33 / 68

33
Symptom Explanation Action
Measurement on patient
samples are higher or
lower than antipicipated. 1. Improper sampling technique.
2. The microcuvettes are beyond their
expiration date, damaged or have been
improperly stored. 1. Take a new microcuvette and repeat the
measurement, as described in the Measuring section.
2. Check the expiration date and the storage conditions
of the microcuvettes.
Measurement on control
materials are out of range,
either too high or too low. 1. Improper sampling technique.
2. The microcuvettes are beyond their
expiration date, damaged or have been
improperly stored.
3. The control material is beyond its
expiration date or has been improperly
stored.
4. The control material has not been
mixed properly and/or is not at room
temperature.
5. The control material is not suitable for
use with the HemoCue WBC system. 1. Take a new microcuvette and repeat the
measurement, as described in the Measuring section.
2. Check the expiration date and the storage conditions
of the microcuvettes.
3. Check the expiration date and the storage conditions
of the control material. If the problem continues,
contact the manufacturer of the control material.
4. Make sure that the control material is mixed properly
and at room temperature. If the problem continues,
contact the manufacturer of the control material.
5. Only use controls recommended by HemoCue, see
relevant package insert for more information.