Study of pre-analytical errors in clinical biochemistry laboratory in Dhiraj General hospital, Piparia

Abstract

Introduction: Pre-analytical errors is the major source of mistakes in laboratory diagnostics. It includes from order of test by physician to sample is ready for analysis. Preanalytical errors are upto 70 % of errors of total diagnostic process. Objectives: 1. To evaluate the pre-analytical errors during pre-analytical testing process; 2. To formulate the possible corrective measures to be taken to minimise such errors. Materials and Methods:  A prospective study was done for a period of 2 months from January 2022 to February 2022 in clinical biochemistry laboratory, central laboratory, Dhiraj general hospital, Piparia. All types of preanalytical errors were recorded. Total 15189 specimens were received during this period. Out of which 569 were sorted with pre analytical errors. Results: They were categorised as follows: Improper test request forms (n-91), Improper labelling (n-118), Insufficient sample (n-121), invalid samples (n-127), sample mix ups (n-18), Delay in sample transportation (n-32), Wrong timing for Collection (n-37), sample not received (SNR) (n-17), Sample from IV running area (n-08). Conclusion: The overall percentage of rejection found is 3.75 %. Hemolysis was the most common cause for sample rejection in clinical laboratory.