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A regional quality control trial of folate assays.
  1. D W Dawson,
  2. D A Newsome


    A regional quality control trial of folate assays is described. It is concluded that the trial is practical and useful in allowing inter-laboratory comparison of results, promoting discussion, and improving precision but it is impossible to assess accuracy. It was of no use in the comparison of assay methods, probably on account of the small number of laboratories participating.

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