Split Sample testing

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Split Sample testing Posted: Mon Dec 22, 2014 12:14 pm
I send out specimens to our reference lab twice a year for split sample testing. I have found that the reference lab that we use has different methods than the one used in my lab. Are there guidelines for samples tested by different methods?
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Re: Split Sample testing Posted: Mon Dec 29, 2014 8:09 am
I will assume you are splitting samples to verify the accuracy of the tests that do not have PT required as discussed on Page 4 & 5 of the CLIA attachment. If this is the case then I would not recommend sending them to a laboratory that is using a different methodology than you are using. I would recommend contacting your instrument manufacturer and asking if there are any lab’s near by that are using the same instrumentation that you are. Contact those labs and see if they would be willing to assist you with your split samples. There are really no simple guidelines to compare two different methods. The CLIA guidelines used for proficiency testing were established to compare results within a peer group.
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