• The smart way to know your value

    The CoaguChek® XS System

CoaguChek® XS system

CoaguChek XS system with strips and Softclix LR

CoaguChek XS system with strips and Softclix LR

The CoaguChek® XS system is a convenient, portable and user-friendly instrument for monitoring oral anticoagulation therapy. It determines the INR value (International Normalized Ratio) from a drop of capillary whole blood –it’s simple, precise and reliable.

The CoaguChek® XS system is ready to use anywhere, any time. You can test yourself at home, school, work or on vacation.

Fast, reliable results

  • Accurate PT/INR results in one minute
  • Built-in quality control checks each and every strip automatically
  • Lab-equivalent accuracy and precision

Simple fingerstick test

  • Most patients prefer having a small drop of blood (just 8 μL) taken from a fingerstick over having blood drawn from a vein

Independence and reassurance

  • Self-monitoring with a single instrument has the benefit of being accurate and reproducible

Improved patient outcomes

  1. Heneghan, et. al (2006). Lancet, 367; 404-411.

Technical Information
Measuring & sampling
Detection system Amperometric (electrochemical) determination of the PT time after activation of the coagulation with human recombinant thromboplastin
User interface Simple user interface with icon-based LCD and On/Off-, Mem- and set-Button
Sample application Outside the meter top- and 2 sides: left or right,-dosing options
Operating Conditions
Temperature + 15° C to + 32° C (59° F to 90° F)
Humidity and height 10 - 85% - 4300 m
Placement - First option: Operate the monitor on a level surface, free of vibrations
- Second option: Hold the monitor in your hand, so that it is roughly horizontal
Measuring range INR: 0. 8 - 8.0
Memory 100 test results with time and date
Interface Infrared
Power Battery - Four 1.5v AAA alkali-manganese batteries
# of tests per set of batteries Up to 300 tests or 2 years
Size 138 x 78 x 28 mm
Weight 127 g (without batteries)
Sample Material
Sample type Fresh capillary whole blood or non-anticoagulated venous whole blood
Sample size 8 µl
Interference Refer to the test-strip package insert.
Test strips
ISI Approx. 1.0
Sensitivity to heparin Not at therapeutic levels, up to 0.8 I.U/ml for UFH and to 2 anti-Xa U/ml for LMWH
Quality control

On each strip, through the same channel as the blood passes

Stability 21 months from production (+ 2° C to + 30° C)

CoaguChek XS – Easy, Fast, Precise


2) Prick your finger with the Roche Softclix lancing device


1) Put a test strip in the CoaguChek XS



3) ...place a drop of blood on the strip



4) After about one minute, read the result on the CoaguChek XS display

For a more complete explanation of the testing procedure, watch the CoaguChek XS handling video below.

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1. What is the recommended test frequency?

The interval between tests will be recommended to you by your doctor or nurse.

2. What is time in therapeutic range (TTR)?

The percentage of time your INR values fall within the upper and lower target value.  i.e. set by your doctor (therapeutic range)

3. How can I improve my time in therapeutic range (TTR)?

By testing more frequently and subsequently better adjust medication

4. Does the CoaguChek XS need calibrating?

No, just insert the Code key that comes with the strips and you are done

5. What steps can I take when the readings are different to the hospital lab?

There are different measurement methods to test your INR. Since the hospital might use a different measurement method, than your meter,  your readings might slightly differ.

If you have questions about your INR readings, please contact your local support organization.

6. Why can’t I perform a liquid quality control?

The meter has an internal quality control, measuring liquid controls is not needed.

7. Does the user have to run the test immediately after having taken it out from the vial?

The vial can be left open for up to 10 minutes. If the strip is left out of the vial too long an error message will be displayed.

8. Why is it important to change the Code chip?

It is important to have the correct code chip inserted that matches the particular code of strips that you are using. The code chip contains essential calibration information for the meter to run a test.

9. What happens if blood is applied before the test strip symbol and flashing drop of blood drop appears on the screen?

An error message (error number 4) will appear on the screen