Table IV.
Reasons for rejection and total preanalytical error rates of samples one month (February 2016) before and one month (April 2016) after training. Data were taken from local HIS.
| Cause for rejection | February | April | p value | ||
|---|---|---|---|---|---|
| n | % | n | % | ||
| Deficient or extensive and mistaken test requests | 236 | 33.4 | 159 | 28.4 | <0.05 |
| Unsuitable blood sampling | 226 | 32.0 | 107 | 19.1 | <0.05 |
| Inadequate or excess sampling | 97 | 13.7 | 106 | 19.0 | >0.05 |
| Sample with clot | 58 | 8.2 | 58 | 10.4 | >0.05 |
| Hemolyzed sample | 31 | 4.4 | 45 | 8.1 | >0.05 |
| Sampling to the incorrect tube | 20 | 2.8 | 38 | 6.8 | <0.05 |
| Sample identification error | 16 | 2.3 | 10 | 1.8 | >0.05 |
| Patient identification error | 11 | 1.6 | 19 | 3.4 | >0.05 |
| Sample transfer error | 11 | 1.6 | 17 | 3.0 | >0.05 |
| Preanalytical error rate (Number of rejected samples/total numbers of samples × 100) | 0.60 (709/118008)*100 | 0.50 (559/111418)*100 | <0.05 | ||