Retrospective Study
Copyright ©The Author(s) 2016.
World J Virol. May 12, 2016; 5(2): 73-81
Published online May 12, 2016. doi: 10.5501/wjv.v5.i2.73
Table 1 Dried blood spot sample rejection rate by year
Year
Total
20082009201020112012
Rejected?No2117 (6.5%)5186 (15.9%)6634 (20.4%)8759 (26.9%)9070 (27.9%)31766 (97.6%)
Count (%)Yes2 (0.1%)62 (1.2%)223 (3.3%)166 (1.9%)333 (3.5%)786 (2.4%)
Total2119 (6.5%)5248 (16.1%)6857 (21.1%)8925 (27.4%)9403 (28.9%)32552 (100%)
Table 2 Reasons for sample rejection by type of healthcare care center (n = 786)
Reason for rejection count (%)TertiarySecondaryPrimaryTotal
No DBS card5 (0.6)76 (9.7)4 (0.5)85 (10.8)
Insufficient quantity of sample15 (1.9)72 (9.2)29 (3.7)116 (14.8)
No request form6 (0.8)39 (5.0)0 (0.0)45 (5.7)
Improper collection25 (3.2)171 (21.9)11 (1.4)207 (26.3)
Baby over age (≥ 18 mo)6 (0.8)58 (7.4)0 (0.0)64 (8.1)
Improper labeling17 (2.2)110 (14.0)2 (0.3)129 (16.4)
Improper packaging4 (0.5)53 (6.7)8 (1.0)65 (8.3)
Contaminated sample0 (0.0)5 (0.6)0 (0.0)5 (0.6)
Baby under age (< 6 wk)2 (0.3)19 (2.4)2 (0.3)23 (2.9)
Reason unknown6 (0.8)40 (5.1)1 (0.1)47 (6.0)
Total86 (10.9)643 (81.8)57 (7.3)786 (100.0)