Fig 1.
Bland-Altman plots for the representative 3 routine chemistry analytes: (A) Ca,(B) BUN, and (C) CREA for the three types of tubes. To compare the absolute differences vertically, three figures were generated for each analyte (BD Vacutainer versus Greiner Vacuette, Improvacutor versus Greiner Vacuette, and Improve Improvacutor versus BD Vacutainer) from the left. Solid lines denote the average difference and ± 2SD in SI units.
Table 1.
Statistical analysis of the results of blood samples from three types of collection tubes (mean ± SD).
Table 2.
Bias analysis and comparison of the results of blood sample analysis from the three types of collection tubes according to desirable specifications of Ricos and CLIA 88.
Table 3.
Comparison of test results before and after 72-h storage of the same samples at 4°C.