Instruction Manual

15
Troubleshooting Guidelines
• Become skilled at obtaining blood with the fingerstick technique. This will help avoid sample errors.
• Follow all of the directions on the screen for optimal operation.
• Do not try to hasten the test process by performing the fingerstick while the WARMING screen is
displayed, as blood may clot before it is drawn into the cuvette and an error may occur. FOLLOW THE
INSTRUCTIONS ON THE SCREEN.
Troubleshooting Guide
Screen Display Source of Error Method of Control
INR HIGH
REPEAT TEST
IF SAME, CALL MD
Patient’s PT result is too
high (INR >12.0)
Repeat the test. If it occurs again,
patient should be referred to their
physician IMMEDIATELY and re-tested
at the lab.
INR LOW
REPEAT TEST
IF SAME, CALL MD
Patient’s PT result is too low
(INR < 0.6)
Repeat the test. If it occurs again,
patient should be referred to their
physician IMMEDIATELY and re-tested
at the lab.
ON-BOARD QC
OUT OF RANGE
TRY AGAIN
Level I or II control is too
high or too low
Repeat the test. Check for adequate
storage of cuvettes or sampling
technique. Confirm results with the
lab.
NO CLOT DETECTED
REPEAT TEST
IF SAME CALL MD
At least one channel did not
clot
Repeat the test. If it occurs again,
patient should be referred to their
physician IMMEDIATELY and re-tested
at the lab.
TIME OUT
TRY AGAIN
Time ran out before starting
test
Test again with new Tenderlett Plus
and a fresh fingerstick. You may reuse
the cuvette if no blood was in contact
with the cuvette.
TEST INTERRUPTED
TRY AGAIN
Cuvette removed or operator
interrupted test
Review correct procedure. Repeat test.
SAMPLE NOT SEEN
TURN OFF
TRY AGAIN
Can be caused by small
samples, clots, air bubbles,
or a seal problem in one or
more channels
Check for proper collection technique.
Verify cup is completely filled. Use
another cuvette.
SAMPLE TOO LARGE
TURN OFF
TRY AGAIN
Sample oversize Review directions and repeat the test.
SAMPLE TOO SMALL
TURN OFF
TRY AGAIN
Sample undersize
Repeat test. Exceed the fill line on the
cup to ensure sample size.
SAMPLE ERROR
TURN OFF
TRY AGAIN
Incorrect fluid movement
Air bubble detected in one
or more of the channels
Turn off and on again and repeat test
with new cuvette and fresh fingerstick.