Roche CoaguChek XS System Betreibershandbuch PDF herunterladen (Seite 11)

Introduction

The meter guides y

ou through the test, step by step, using icons and instructions on the display.

Each box of test strips has its own code chip that you insert into the meter. This code chip con-

tains lot-specific information about its test strips, such as the expiration date and calibration

data. Optional liquid controls for the system are also available.

The CoaguChek XS Pro meter has the ability to connect to a data management system (DMS)

through the Handheld Base Unit from Roche (available separately). The CoaguChek XS Pro

meter supports data exchange via the POCT1A standard. Data management systems may have

the ability to expand the security features of the meter, such as enabling operator lockouts. Data

management systems may also enable data transfer to an LIS or HIS. Refer to the manuals of the

Handheld Base Unit and of your DMS for technical details.

Test principle

The CoaguChek XS PT Test contains a lyophilized reagent. The reactive components of this

reagent consist of thromboplastin and a peptide substrate. When a sample is applied, thrombo-

plastin activates coagulation, which leads to the formation of thrombin. At the same time the

meter starts to measure the time. The enzyme thrombin cleaves the peptide substrate, generating

an electrochemical signal. Depending on the time elapsed when it first appears, this signal is

then converted by means of an algorithm into customary coagulation units (INR, %Quick, sec-

onds) and the result is displayed.

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Roche CoaguChek XS System Betreibershandbuch Seite 11