|Table 1: Variability in hematological parameters from two different brands of K3EDTA vacuum tubes.|
*Normal distribution; the values were mean ± standard deviation (range: minimum-maximum); value represents the significance by paired Student’s -test.|
**Nonnormal distribution; the values were median ± standard deviation (5th–95th percentiles); value represents the significance by Wilcoxon ranked-pairs test.
The bold values are statistically significant (), and bold mean % differences represent clinically significant variations, when compared with desirable bias .
NA: not available .
Tube I: 4.5 mL Labor Import lot 20100505 (concentration of K3EDTA inside the tube is not made known by Shandong Weigao Group Medical Polymer, Weihai, China).
Tube II: 1.2 mL S-Monovette lot 0092201 with 1.6 mg K3EDTA (Sarstedt, Nümbrecht, Germany).