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Summary of Precautions
Narrow Margin Bar Code Precautions
General Information
UniCel DxC Systems Instructions For Use A13914
Page 1-10
October 2005
Narrow Margin Bar Code Precautions
The sample bar code reader on the DxC can read narrow-margin bar codes. Because
of the sensitivity needed to read narrow-margin bar codes, the labels must be high
quality. They must be free from smudges, spots or other imperfections. An
imperfection could be read as part of the Sample ID. This could cause an inaccurate
read of the bar code.
Racks Replacement Precautions
Racks should be replaced every five years. Damaged racks should not be used on the
system or in the SPINCHRON™ Centrifuge.
Ratio Pump Quad-Ring Replacement Precautions
Be careful not to twist quad-rings or O-rings during installation, as this could result in
reagent leakage or even in ratio pump failure.
Reagent Volume Precautions
Check reagent volumes before starting a run. Failure to operate with sufficient reagent
will result in erroneous chemistry results. In some cases, results will be obtained
without proper amounts of reagents in the modules. Therefore, before starting any run,
verify that sufficient reagent is available to complete the run.
Modular chemistry reagent containers should not be handled while the system is
performing modular chemistry measurements.
The use of expired reagents may cause erroneous results.
Residual Blood Contamination Precautions
Before you place your validated closed tubes on the DxC, check the top of the cap for
any residual blood. Residual blood contamination into the sample could affect results.
If blood is present, remove it by using a cotton-tipped applicator stick moistened with
DI water. When running in the CTS mode, if tubes off-loaded from the UniCel DxC
Systems have water or droplets of water on the caps, disable the CTS and call
Beckman Coulter Technical Support.
Note: Oil on a cap is normal.
Reuse of Sample ID Precautions
If your LIS or normal workflow requires the reuse of sample IDs, the sample
programming should be cleared from the DxC at a time interval that is less than the
shortest time of sample ID reuse. Failure to heed this warning will result in new
requests being merged with tests from incomplete samples that previously used that
ID.