Testing Controls - Bayer HealthCare CLINITEK 500 Operating Manual

Testing Controls

Negative and positive controls should be run on a reg-
ular basis to provide a check on the performance of the
Bayer Reagent Strips and on the instrument operation.
Testing controls provides confidence that the Reagent
Strips are reacting and being read properly. Errors result-
ing from user techniques can also be detected. It is
suggested that controls be run under the following
conditions:
• At the start of the day's run;
• When using a new bottle of Reagent Strips;
• Whenever test results are in doubt;
• When training new instrument operators.
CHEK-STIX ® Positive and Negative Control Strips for
Urinalysis are available for use on the CLINITEK 500
Analyzer. The solutions prepared using the Control Strips
provide positive, negative, or defined reactions when used
with traditional Bayer Reagent Strips for Urinalysis.
Alternatively, a urine specimen from a normal, healthy
individual can be used as a negative specimen. Additional
information on CHEK-STIX Positive and Negative Control
Strips can be found in Section 6 of this manual and in
the package insert for the Control Strips.
NOTE: If using MULTISTIX PRO
ity control should be performed using commercially
available controls that include values for each test on
the strip; CHEK-STIX Control Strips are not suitable for
use with these products. For information about control
manufacturers, contact your Bayer office or represen-
tative. In the United States, call the Bayer Technical Care
Center at 1-877-229-3711.
To test control specimens, proceed as follows:
1. Prepare the appropriate control solution(s) by fol-
lowing the directions found in the package insert or
on the bottle label.
2. Touch the Menu key symbol from the Ready/Run
screen, then touch the Controls key (if not already
done). The display will change to a numeric keyboard,
from which the lot identification of the controls can
be entered, the sequential number reset, and the con-
trol run started.
Revised 10/06
® Reagent Strips, qual-
2. a. Notice the control sequential number displayed
immediately to the left of the lot number (e.g.,
" "). If you want to reset this number, touch
C
0035
the key labeled C0001.
2. b. Enter the lot identification of the first control to be
tested. If alphabetic characters are needed, touch
the key to display the alphabetic keyboard.
Touch after entering the letters to return to the
numeric display.
2. c. Touch when you are ready to test the control.
3. The display will prompt "
immerse all reagent areas of the Bayer Reagent Strip
in the control solution. Immediately remove the
Reagent Strip. While removing, slowly run the edge of
the entire length of the Reagent Strip against the side
of the container to remove excess control solution.
4. Place the reagent strip, with reagent areas up, onto
the strip supports of the strip loading station, to the
right of the small embossed arrow (
the rear wall of the platform (Figure 4-1).
Figure 4-1
" Completely
Place strip.
) and against
4.3