EVALUATION OF THE ROCHE URISYS 1100

Evaluation of the Roche Urisys 1100 and Clinitek Status Urine Dipstick Reader



Evaluation of the Roche Urisys 1100 and Clinitek Status Urine Dipstick Reader

Point-of-care testing, according to author Christopher Price, is "the provision of a test when the result will be used to make a decision and to take appropriate action, which will lead to an improved health outcome." The key objective of point-of-care testing (POCT) is to produce a result more quickly, so the utility of POCT is in the immediacy of response. The two most common sites for POCT are the patient's routine living environment and the intensive care unit, although changing healthcare delivery is taking POCT into many other arenas. The reliability of POCT depends greatly on the technical performance of POCT devices as well as compliance with treatment protocols. Today, demands for improved clinical, operational, and economic outcomes have contributed to expanded use of point-of-care tests.

The Urisys 1100 Urine Analyzer is calibrated before leaving the factory. When installed, it must be recalibrated with a Chemstrip Calibration Strip before the first samples are read, and thereafter every seven days. Chemstrip Calibration Strips consist of a gray plastic material that is standardized to give constant, defined reflectance readings. Calibration strips should remain in the vial until just prior to use and should only be used once.

The purpose of calibrating the analyzer is to compensate for aging effects that influence the optical system and the gray reference pad in the strip tray. If the compensation needed is excessive, for example because the reference pad is badly soiled, or an LED is defective and cannot emit the required amount of light, an error message is displayed.

When the Urisys 1100 Urine Analyzer is set to read Chemstrip 10 MD* Test Strips, it automatically requests a new calibration every week. In addition, when the instrument is installed, the "Repeat Calibration!" message is displayed following a successful self check.

It is very important that the calibration test strip locks into the instrument correctly in order to ensure the quality of the calibration.

5. Press the START button. An acknowledging beep sounds. The tray advances slightly, the retaining bar closes, and the gray reference pad on the tray and the calibration pads are read.

6. The tray then returns to the start position, and the retaining bar opens. Remove and dispose of the calibration strip. Use each calibration strip only once.

If the results obtained for the reference pad or the calibration strip is outside the programmed tolerances, one of the following messages will appear: "Reference Pad Error!", "Calibration Invalid!" or "Calibration Error!”

In the event of a calibration error, repeat the calibration procedure with a fresh Chemstrip Calibration Strip. Press the START button to return to the "START CALIBRATION" menu. Follow the same calibration procedure as above. When the message "Calibration O.K." has been printed, proceed with the reading of test strips. If you continue to receive an error message, see Section 8.

The Urisys 1100 Urine Analyzer is very easy to ...