Objective: To reduce the out-of-threshold (OOT) value of the turnaround time (TAT) of semen samples in the andrology laboratory and improve the clinical diagnosis and patients' satisfaction.
Methods: We retrospectively analyzed the defect rate of TAT of semen samples in the andrology laboratory in the first two quarters of 2018. In the second two quarters, we made a table of countermeasures targeting the causes of the defects using plan-do-check-act (PDCA) circulation and the fishbone diagram drawn with the brainstorm method, followed by supervision of the implementation of the measures and observation of the changes in the OOT value of TAT of semen samples.
Results: The OOT rate of TAT of semen samples before seminal examination was significantly lower in the third and fourth than in the first and second quarters of 2018 (0.83% and 0.78% vs 3.43% and 2.07%, P < 0.01), and so was the total OOT rate of TAT (6.36% and 0.87% vs 7.00% and 7.15%, P < 0.01). The median of TAT of semen samples before computer assisted semen analysis was decreased from 22 min in the first to 17 min in the fourth quarter, and the 90th percentile from 54 min to 40 min. The median of total TAT in biochemical analysis was reduced from 387 min in the first to 315 min in the fourth quarter, and the 90th percentile from 1415 min to 1179 min.
Conclusions: The application of PDCA circulation can significantly shorten the turnaround time of semen samples and improve the efficiency of diagnosis and treatment and quality control in the andrology laboratory.
Keywords: andrology laboratory; plan-do-check-act (PDCA) circulation; seminal examination; turnaround time of semen samples.