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How To Evaluate Ungraded Results?(CAP Surveys)Prepared By: BILAl Al-kadriJuNE, 2010
Proficiency Testing:  A form of External Quality Control Good Laboratory practices Develops confidence in the accuracy & reliability of your results CAP Surveys three times/year (some two/year)  Evaluate each analyte and specimen for negative/positive bias, trends or shifts
Documentation: Always maintain documentation of CAP surveys for minimum 2 YEARS. This includes Participant Summary, investigations. Reporting forms, evaluation reports, etc…
Documentation: You can download Participant Summary for each surveys as necessary. www.cap.org Refer to following slides for downloading
Action to take: The College uses exception reason codes for the PT analyte that has not been graded,… (refer to next slides for various codes)  ,[object Object],[object Object]
Exception Reason Codes:
Evaluation Criteria: Analyte: Activated Partial Thromboplastin Time Target Value: Peer Group Eval Criteria: +/_ 15% ,[object Object]
Calculate the Mean of the Means:52.9+51.6+49.2+…………..+53.7+46.7+46.9         = 55.8                                    23 Mean -15% is: 55.8 – (55.8 x 15/100)= 47.4 Mean +15% is: 55.8 – (55.8 x 15/100)= 47.4
Evaluation Criteria: Analyte: D- dimer, Quant Target Value: Peer Group Eval Criteria: +/_ 3SD ,[object Object]
Calculate the Mean of the Means:4797.6 + 2309.27 + 1591.01 + 2019.5+ 2028.86                                    5 Mean -3SD is: 2549.25 + (3x268.37) = 1744.14 Mean +3SD is: 2549.25 + (3x268.37)= 3354.35
Evaluation Criteria: Analyte: Fibrinogen Target Value: Peer Group Eval Criteria: +/_ 20% ,[object Object]
Calculate the Mean of the Means:269.605+261.488+…………..+271.382+267.904  = 296.177                                    23 Mean - 20% is: 296.177– (296.177 x 20/100)= 236.942 Mean + 20% is: 296.177+ (296.177 x 20/100)= 355.412
Evaluation Criteria: Analyte: INR Target Value: Peer Group Eval Criteria: +/_ 20% ,[object Object]
Calculate the Mean of the Means:2.49+3.37+3.17+…………..+2.64+2.71+2.86= 2.77                                    23 Mean - 20% is: 2.77– (2.77 x 20/100)= 2.22 Mean + 20% is: 2.77+ (2.77 x 20/100)= 3.32
Evaluation Criteria: Analyte: ProthrombinTime Target Value: Peer Group Eval Criteria: +/_ 15% ,[object Object]

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Ungraded Results in CAP Surveys

  • 1. How To Evaluate Ungraded Results?(CAP Surveys)Prepared By: BILAl Al-kadriJuNE, 2010
  • 2. Proficiency Testing: A form of External Quality Control Good Laboratory practices Develops confidence in the accuracy & reliability of your results CAP Surveys three times/year (some two/year) Evaluate each analyte and specimen for negative/positive bias, trends or shifts
  • 3. Documentation: Always maintain documentation of CAP surveys for minimum 2 YEARS. This includes Participant Summary, investigations. Reporting forms, evaluation reports, etc…
  • 4. Documentation: You can download Participant Summary for each surveys as necessary. www.cap.org Refer to following slides for downloading
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 13.
  • 15.
  • 16. Calculate the Mean of the Means:52.9+51.6+49.2+…………..+53.7+46.7+46.9 = 55.8 23 Mean -15% is: 55.8 – (55.8 x 15/100)= 47.4 Mean +15% is: 55.8 – (55.8 x 15/100)= 47.4
  • 17.
  • 18. Calculate the Mean of the Means:4797.6 + 2309.27 + 1591.01 + 2019.5+ 2028.86 5 Mean -3SD is: 2549.25 + (3x268.37) = 1744.14 Mean +3SD is: 2549.25 + (3x268.37)= 3354.35
  • 19.
  • 20. Calculate the Mean of the Means:269.605+261.488+…………..+271.382+267.904 = 296.177 23 Mean - 20% is: 296.177– (296.177 x 20/100)= 236.942 Mean + 20% is: 296.177+ (296.177 x 20/100)= 355.412
  • 21.
  • 22. Calculate the Mean of the Means:2.49+3.37+3.17+…………..+2.64+2.71+2.86= 2.77 23 Mean - 20% is: 2.77– (2.77 x 20/100)= 2.22 Mean + 20% is: 2.77+ (2.77 x 20/100)= 3.32
  • 23.
  • 24. Calculate the Mean of the Means:18.82+34.73+33.41+…………..+29.4+28.27+29.58=28.46 26 Mean -15% is: 28.46– (28.46 x 15/100)= 24.19 Mean +15% is: 28.46 – (28.46 x 15/100)= 32.73
  • 25. Conclusion: Code 27 – Lack of participant or referee consensus; Document a self-evaluation following instructions as per the Participant Summary. Every effort should be made to find the cause(s) of an unacceptable pt result.
  • 27. Contacts: Bilal Al-kadri Iso15189.consultant@gmail.com http://kw.linkedin.com/in/balkadri