Multicentre evaluation of the Roche Elecsys® Active B<sub>12</sub> (holotranscobalamin) electro-chemiluminescence immunoassay.

Ann Clin Biochem · 2019 · PMC6826884 · PMID 31241982

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a negative trendno p-value reported

This bias shows a negative trend proportional to the magnitude of measurement showing a higher bias when the active B 12 concentration becomes lower.

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