Posted by Sten Westgard, MS


Analytical Evaluation of a POC Blood Analysis System

Point of Care Testing
A recent study evaluated the analytical performance of a Point-of-Care (POC) blood analysis system. Are today's new POC devices better than earlier generations? Are there additional sources of error that need to be tracked when we evaluate POC?

Are POC devices Pretty good, Occasionally acceptable, or Considerably challenging?



Chloride Quality: Can any method hit the mark?

Can anyone hit the mark with their potassium method? Continuing with our series examining quality requirements and goals and the performance of methods, we turn to chloride. We examine the different goals offered for chloride, and evaluate what methods are capable of achieving.

Can any method hit the target for Chloride?


The Blind Side? More tales from the manufacturer's range

What would your lab do if they saw these results?
Following up on the example of a laboratory blinded by a manufacturer's (too wide) range, another reader has an anonymous submission of a similar scenario.

Would your lab have caught this error? part two?

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