The initial reporter stated they received discrepant results for four patient samples tested with elecsys vitamin d total iii on a cobas e 801 module.The first sample initially resulted in a vitamin d value of 81.7 ng/ml and it repeated as 35.2 ng/ml.The second sample initially resulted in a vitamin d value of 104 ng/ml on (b)(6) 2024.The sample was repeated three times on (b)(6) 2024, resulting in values of 38.2 ng/ml, 98.5 ng/ml, and 95.9 ng/ml.The reagent pack was changed and the sample was repeated on (b)(6) 2024, resulting in a value of 25.4 ng/ml.The third sample initially resulted in a vitamin d value of 50.4 ng/ml on (b)(6) 2024.The sample was repeated on (b)(6) 2024, resulting in a value of 37.1 ng/ml.The reagent pack was changed and the sample was repeated on (b)(6) 2024, resulting in a value of 26.9 ng/ml.The fourth sample initially resulted in a vitamin d value of 105 ng/ml on (b)(6) 2024.The sample was repeated twice on (b)(6) 2024, resulting in values of 18 ng/ml and 28.0 ng/ml.The reagent pack was changed and the sample was repeated on (b)(6) 2024, resulting in a value of 27.9 ng/ml.The values measured after the reagent pack change were reported outside of the laboratory as these agreed with the previous values of the patients.
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