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Types of preanalytical mistakes in laboratory testing.
| Defects detection steps | Defects found | |
| number | Frequency(%) | |
| Wrong identification of the patient | 281 | 26.81 |
| Physician's order missed | 147 | 14.03 |
| Inappropriate container used | 6 | 0.57 |
| Inappropriate quantity of specimen | 121 | 11.55 |
| Inappropriate quality of specimen | 493 | 47.04 |
