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The CoaguChek XS Plus System quantitatively measures prothrombin (blood-clotting) time (PT/ Quick value/INR). INR is a measure of the rate at which blood clots. A low INR can increase the risk of blood clots, while a high INR can increase the risk for internal bleeding. The patient’s physician will determine the best INR range for that patient, depending on why the patient is taking anticoagulants and how the patient reacts to them. The doctor will also determine how often the patient needs blood testing.", "Name": "Product Description" } ] } } ] }

CoaguChek® XS Plus system

Coagulation monitoring for healthcare professionals

Product image for CoaguChek ® XS Plus system

Accurate testing at the point of care


The CLIA-waived CoaguChek XS Plus system enables accurate INR testing at the point of care. It also offers data management capabilities, so healthcare professionals can easily and efficiently manage warfarin patients at the point of care.  


The CoaguChek XS Plus makes it easy to manage warfarin patients.


Accurate and flexible technology provides results in about one minute and offers quality control options, including on-board controls and liquid quality controls. 

Streamline data management. The CoaguChek XS Plus can store 2,000 test results and 500 optional quality control results. Additionally, it gives healthcare providers the ability to denote patient IDs and add comments.

Produce accurate results with ease. Only a small sample size is required, obtained through a fingerstick, and the icon-driven touch-screen interface makes testing a simple and intuitive process.


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These features make the CoaguChek XS Plus stand apart from competing systems: 

  • It’s the only system with a 97% correlation to the lab using a single-strip platform, which means providers can count on consistent and accurate results.1
  • CoaguChek technology reduces heparin interference for more accurate results.
  • The monitoring portfolio offers a single-strip platform for consistency in INR results across the care continuum.



1. 97% correlation with lab results using Dade Innovin reagent on a Sysmex 560 Analyzer. [package insert 09155503001v4]. Indianapolis, Ind.: Roche Diagnostics; 2022. 

CoaguChek XS plus system



Technical Documents


Measuring & sampling

  • Detection system

    Amperometric (electrochemical) determination of the PT/INR after activation of the coagulation with human recombinant thromboplastin

  • User interface

    Full graphical (TFT)

  • Support and safety functions

    QC lockout, Patient & User ID, protection with administrator ID

  • Sample application

    Outside the meter, with top-and 2 sides (left or right)-dosing options

Operating conditions

  • Operating temperature

    +15° C to +32 °C (59 °F to 90 °F)

  • Operating humidity and altitude

    10 - 85% - 4300 m

  • Handling

    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; %Q: 120 - 5; SEC: 9.6 - 96

  • Memory

    2000 patient and 500 QC results with date and time.

    60 code chip records.

    Operator lists with up to 5000 Operator IDs with corresponding 2nd ID.

    Patient lists with up to 4000 Patient IDs with corresponding 2nd and 3rd IDs.

  • Interface

    Infrared interface

  • Power options

    Power supply adaptor: input: 100 - 240 V / 50 - 60Hz / 400 mA; output: 7.5 V DC/ 1.7 A

    4 x 1.5 V AA batteries (alkali - manganese)

    Rechargeable battery pack (optional)

  • Number of tests per set of batteries

    Approx. 80 tests (approx. 60 tests per charging cycle if the rechargeable battery pack is used)

  • Dimensions

    185 x 97 x 43 mm

  • Weight

    311 g (without batteries)

Sample material

  • Sample type

    Fresh capillary whole blood or non-anticoagulated venous whole blood

  • Sample size

    ≥ 8 μl

  • Interferences

    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)

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