Tools, Technologies and Training for Healthcare Laboratories

New Paper on MU, TE, and the unnecessary struggle

Posted by Sten Westgard, MS

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Comparing MU to Ricos Desirable CV: Like comparing an apple to basketball

Posted by Sten Westgard, MS

I was looking over a recent study of a compact blood gas analyzer conducted over multiple sites, multiple cartridges, multiple days, etc. In other words, this was a study that was doing a very thorough job.

Then I reached a section where suddenly it all fell to nonsense: measurement uncertainty.

So they calculated measurement uncertainty, but then they compared the results against Ricos desirable imprecision performance specifications.

Huh?

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Pop Quiz: How many equations are needed (at minimum) to calculate measurement uncertainty?

Posted by Sten Westgard, MS

In Biochemia Medica, a recent article detailed the Minimum requirements for the estimation of measurement uncertainty:Recommendations of the joint Working group for uncertainty of measurement of the CSMBLM and CCMB.

Can you guess how many?

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New Paper: Risk-Based QC Strategies with Six Sigma Nomograms

Posted by Sten Westgard, MS

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Are there new (Erna Lenters-)"Westra Rules" for HbA1c?

Posted by Sten Westgard, MS

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Sigma-metrics in Korea PT

Posted by Sten Westgard, MS

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Budgets aren't the only things getting squeezed in the lab...

Posted by Sten Westgard, MS

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Westgard in the News: Advance for the Laboratory Manager, February Issue

Posted by Sten Westgard, MS

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Setting specifications for setting specifications for...

Posted by Sten Westgard, MS

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Interview: Westgard in the Pathologist

Posted by Sten Westgard, MS

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New Publication: Global Survey of EQA / PT performance

Posted by Sten Westgard, MS

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Pop Quiz: How much time should it take to build an IQCP?

Posted by Sten Westgard, MS

Now that the age of the IQCP is here, laboratories are grappling with the time and effort it takes to build their Individualized Quality Control Plans. How long should it take to build an appropriate IQCP?

  • 40+ hours
  • 21-40 hours
  • 11-20 hours
  • 5-10 hours
  • Less than 5 hours?

How much time has it taken for you? How much time do you think it should take?

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New publication: Quality Control Review

Posted by Sten Westgard, MS

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Pop Quiz: what kind of QC is performed in Canadian Coag Labs?

Posted by Sten Westgard, MS

An important new study was published in the International Journal of Laboratory Hematology, on the QC practices of coagulation laboratories.

But here's a question for you: of all these activities, how many of them occur greater than 90% of the time - and which one doesn't?

  • Repeat the QC, and if it passes, report results
  • Open [and run] new QC
  • Look for trending
  • Discontinue testing until controls are within limits
  • Repeat all patient samples from the last acceptable QC

To find out which one of the activities occurs at a frequency not like the others, follow the jump...

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A dearth of data in published papers

Posted by Sten Westgard, MS

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Are performance specifications based on biological variation for hemostatis unfit-for-purpose?

Posted by Sten Westgard, MS

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Westgard in the News: Shaking up QC Frequency

Posted by Sten Westgard, MS

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