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Table 4 Types of preanalytical mistakes in laboratory testing.

From: Types and frequency of preanalytical mistakes in the first Thai ISO 9002:1994 certified clinical laboratory, a 6 – month monitoring

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