Control Cuvette
Control Cuvette
Control Cuvette
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Quality <strong>Control</strong><br />
<strong>Control</strong> <strong>Cuvette</strong><br />
Check the function of the photometer on a daily<br />
basis by measuring the control cuvette. Values<br />
obtained should not deviate from the assigned value<br />
on the control cuvette card more than ±0.3 g/dl<br />
(±3 g/l, 0.2 mmol/l).<br />
Hemoglobin <strong>Control</strong>s, whole blood or hemolysate<br />
A control of the total system i.e. photometer and<br />
microcuvette can be obtained by using whole blood<br />
or hemolysate with a given hemoglobin value. The<br />
blood control used should have a viscosity equal to<br />
that of normal blood. It is important that the control<br />
blood is mixed well before use, preferably ten minutes<br />
in a blood mixer.<br />
HemoCue AB supplies controls in different concentrations.<br />
N.B.: Many whole blood or hemolysate controls that<br />
are available commercially contain additives that<br />
cause turbidity (cloudiness). As the photometer<br />
compensates for turbidity it can give a lower hemoglobin<br />
value than that given for the control blood/<br />
hemolysate.<br />
Specifications<br />
For performance characteristics, see HemoCue B-<br />
Hemoglobin microcuvette instructions for use.<br />
Measuring Range<br />
0-25.6 g/ldl (0-256 g/l, 0-15.9 mmol/l)<br />
Values above 23.5 g/dl (235 g/l, 14.6 mmol/l) should be<br />
confirmed using a suitable laboratory method.<br />
Values above 25.6 g/dl (256 g/l, 15.9 mmol/l) will display an<br />
error code: “ERROR 999 ” or ERROR HHH”.<br />
Reference Values<br />
Adult Males<br />
13.0–18.0 g/dl (130-180 g/l, 3.1-11.2 mmol/l)<br />
Adult Females<br />
11.0–16.0 g/dl (110-160 g/l, 6.8-9.9 mmol/l)<br />
Infants, after neonatal period 10.0–14.0 g/dl (100-140 g/l, 6.2-8.7 mmol/l)<br />
Children, two years to teenage: gradual increase to adult normals.<br />
Due to the wide range of conditions (dietary geographical, etc) which affect<br />
normal values, it is recommended that each laboratory establish its own<br />
normal range.<br />
Limitations<br />
The HemoCue B-Hemoglobin photometer is only to be used together<br />
with HemoCue B-Hemoglobin microcuvettes.<br />
The HemoCue B-Hemoglobin microcuvettes are for in vitro diagnostic<br />
use only. For further limitations of the procedure, see HemoCue B-<br />
Hemoglobin Microcuvette instructions for use.<br />
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