Sten Westgard - Westgard QC - Blog - Page 8 - Results from #140

Tools, Technologies and Training for Healthcare Laboratories

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

Posted by Sten Westgard, MS

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Coming in March: Westgard in Alexandria, Egypt

Posted by Sten Westgard, MS

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Q & A: The Deleting Data Dilemma

Posted by Sten Westgard, MS

"We have a department supervisor that instructs the techs to delete (not omit) qc values outside of three s.d..Is there a specific CLIA rule against this? Where I come from, deleting qc values is wrong."

What do you think? The answer, after the jump...

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Theranos: could it get worse?

Posted by Sten Westgard, MS

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Setting specifications for setting specifications for...

Posted by Sten Westgard, MS

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The Great Global QC Survey

Posted by Sten Westgard, MS

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What's New: January 2017

Posted by Sten Westgard, MS

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Pop Quiz: What's the Sigma on Hospital Harm in the US?

Posted by Sten Westgard, MS

The third year of Medicare penalties has been meted out. This year hospitals were penalized for avoidable complications such as various types of infections, blood clots, bed sores, falls, and new to the list this year, the prevalence of two types of bacteria resistant to drugs.

Do you want to guess the percentage of injuries that impacted patients in US healthcare?

  • 15%
  • 11.5%
  • 1.15%
  • 0.115%

The answer, after the jump...

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Q & A: Establishing new control ranges for unassayed chem controls

Posted by Sten Westgard, MS

Another question coming in from one of our website members:

Could you give me some suggestions on establishing QC ranges for unassayed chem. Controls?

We currently use [Brand X] unassayed chem controls (much less in cost than assayed controls) for some of our chemistry analytes.

For these controls, we are provided a “target mean” and a range.

Occasionally, our established mean (i.e. n=30) for a new lot  is outside of the range provided for “target mean” provided by manufacturer.

Could you suggest guidelines for acceptance of lab established means for unassayed controls? 

Obviously, I would like to know how far from the “target mean” could the new lab established mean be?

The answer, following the jump...

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Q & A: Is this a 4:1s violation?

Posted by Sten Westgard, MS

We got the following question emailed to the website recently:

Greetings, I was [wondering] if the following case represents [violation] of 4 1s rule?

Control (A) point 1= EXCEEDS 2 SD /-2 SD lines >> warning

Control (A) point 2= WITHIN 2 SD/-2 SD lines >> accepted

Control (A) point 3= EXCEEDS 2 SD /-2 SD lines >> warning

Control (A) point 4= WITHIN 2 SD/-2 SD lines >> rejection

all the point[s] on the same side of the mean.

What do you think? The answer, after the jump

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Stats of 2016

Posted by Sten Westgard, MS

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What's New: December 2016

Posted by Sten Westgard, MS

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Thank you, Jiao Tong University

Posted by Sten Westgard, MS

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Thank you, Haerbin!

Posted by Sten Westgard, MS

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A new Sigma-metric software program!

Posted by Sten Westgard, MS

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What's New: October 2016

Posted by Sten Westgard, MS

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Q & A: The basis of bias%?

Posted by Sten Westgard, MS

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Theranos Bleeds out...

Posted by Sten Westgard, MS

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Belated Pictures from Philadelphia

Posted by Sten Westgard, MS

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New chapter: finding and fixing the error of our testing ways

Posted by Sten Westgard, MS

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