Aborting A Test In Progress; Interpreting Your Results - Guardian R1000 Operation Manual

Figure 25: Posi- Figure 26: Nega-
tive test result tive test result
Figure 27: To begin another Auto-
matic Test, place an undosed test
strip in the Reader
Figure 28: Reader Main
Menu
Figure 29: Confirm that you wish
to abort the current test
If the sample value ("SV") from the Test Strip reading exceeds
the threshold value ("TV") setting, a POSITIVE test indication is
displayed and an audio alarm sounds. Press the "STOP" button to turn
off the alarm.
11. To repeat or run another Automatic test, press the "Enter"
button. The Display will return to the "INSERT UNDOSED
CARTRIDGE" Screen (Figure 27). From here, follow the
instructions beginning at step 3, above.
12. After all Test Strips have been read and all results have
printed, press the "STOP" button to return to the Main Menu
(Figure 28).
13. When running toxin tests (ricin, botulinum toxin or SEB),
prepare a 1:40 dilution and dose another test strip. See Tech-
nical Bulletin #6 for details. Alexeter Technical Bulletins
may be found at the end of this manual. Be sure to check
Alexeter's website for the latest Technical Bulletins.

ABORTING A TEST IN PROGRESS

Follow these steps to run abort a test in progress:
1) You may abort the test process at almost any point in the
testing process by pressing the "STOP" button.
2) Confirm your decision by selecting "Yes" at the prompt
(Figure 29).
3) Press the "Enter" button to return to the MAIN MENU.

INTERPRETING YOUR RESULTS

1) No test result is valid in the visual absence of a strong line in
the control area. If you do not see a control line proceed as
follows:
a. Retest the sample, making sure you are using a fresh
test strip from an undamaged foil pouch.
b. If the sample is very viscous (thick), dilute it 1:4
with Sample Buffer and retest. Remember that the
sample must be able to flow across the strip.
c. If you continue to fail to get a line in the control
area, call Alexeter for instructions.
2) The visual presence of a line in the sample area indicates
the presence of the target material in your test sample. It is
strongly suggested that you retest in Automatic Mode. Call
Alexeter immediately if you verify positive results.
3) The visual absence of a line in the sample area indicates that
the target material is not present or is present at a very low
level in your test sample. Always visually inspect all test
strips to confirm the Reader output.
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