cobas b 221 system

Convenience for your critical care testing

cobas b 221 system
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Benchtop analyzer which gives lab-quality results in less than 2 minutes

Comprehensive testing menu covers 18 of the most important critical-care blood parameters including: blood gases, electrolytes, co-oximetry and metabolites.


Fast diagnosis


  • Results in less than 2 minutes to support timely clinical decision making


Flexibility of testing


  • Comprehensive parameter menu to meet varying department needs


Confidence in result quality


  • Lab-quality results where and when you need them


Improved uptime


  • Long-life, maintenance-free electrodes and minimal preventative maintenance

cobas b 221 system versions

View Full Table

cobas b 221 system versions



2 4 6
Blood gases (pH, pO2, pCO2, pH) / Co-oximetry x x x
Electrolytes (Na+, K+, Ca2+-) / Hematocrit   x x
Metabolites (Glu / Lac)     x
Metabolites (Glu / Lac / Urea (BUN))     x
Bilirubin x x x




Technical Documents



  • Throughput

    up to 50 samples/hour

  • Time to result

    less than 2 minutes with whole-blood sampling

  • Module

    Optional module for automatic quality control

  • Parameter combinations

    Three different parameter combinations (see table below) including glucose, lactate, urea and bilirubin

  • Maintenance

    Durable, low-maintenance sensors

  • Touchscreen

    Easy-to-use touchscreen and intuitive user interface

  • Trending acid-base maps

    Trending acid-base maps to support clinical decisions

  • Reagent tracking

    Control reagents consumption

  • Customizable

    Customizable features include a user-definable display and two types of sample application

  • Connectable

    Connectable to your network via cobas® infinity POC for remote control and for comprehensive data management

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