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Table. 2.

Table. 2.

Evaluation of dilutions using the Roche Myoglobin assay on the cobas e602 analyzer

Expected concentration (nmol/L) Result of diluted specimen* (nmol/L) Dilution Final reported result* (nmol/L) % Recovery
48,744.33 121.86 1:400 48,744.33 100.0
24,375.28 68.00 1:400 27,201.07 111.6
12,190.73 35.86 1:400 14,342.58 117.7
6,098.48 132.19 1:50 6,609.66 108.4
3,052.36 67.31 1:50 3,365.67 110.3
1,529.27 37.29 1:50 1,864.61 121.9
767.75 84.94 1:10 849.44 110.6
386.97 44.03 1:10 440.34 113.8
196.57 23.51 1:10 235.11 119.6
101.40 12.90 1:10 129.04 127.3
53.82 6.75 1:10 67.53 125.5
30.00 4.06 1:10 40.56 135.2
18.09 Not applicable No dilution 18.93 104.6
12.13 Not applicable No dilution 12.87 106.1
9.16 Not applicable No dilution 9.61 104.9
7.70 Not applicable No dilution 7.87 102.2
6.97 Not applicable No dilution 7.08 101.6

*The result of the diluted specimen is calculated by dividing the final reported result divided by the dilution performed (e.g., if the final reported result were 500 nmol/L and the dilution performed was 1:10, the calculation would be 500 nmol/L/10=50 nmol/L).

Ann Lab Med 2024;44:367~370 https://doi.org/10.3343/alm.2023.0427

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