We are experiencing unacceptable performance on the UKNEQAS Specific
Protein scheme with lot numbers 083678 and 083679 of the above calibrator
REF OQIM 13. The assays that appear most affected are IgG, IgA and IgM.
I would be grateful if those who have experienced similar problems with
this calibrator would let me know. I have found it difficult and slow for
the company to admit that there is a problem.
If anyone has an old lot number of calibrator that appears to be giving
satisfactory EQA performance and has a bottle to spare that would be even
better. I am informed that lot number 083680 is unavailable at present
but should remove the problem we are experiencing.
Thanks
Philip
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