Analysis of turnaround time by subdividing three phases for outpatient chemistry specimens.
The Department of Laboratory Medicine at Asan Medical Center provides a special one-stop service to allow both doctors and outpatients to receive routine outpatient test results in a timely manner within 1 hr. We developed a new Laboratory Information System (LIS)-based monitoring system that records the laboratory turnaround time (TAT) in 3 phases and analyzes the time to complete each phase with relevant specimens. TAT is subdivided into preanalytical, analytical, and postanalytical phases based on the 4 time points when data are entered automatically into the LIS. The average TAT for 13,594 outpatient routine chemistry specimens with the one-stop service was 43.6+/-7.7 min. Completion times of the preanalytical, analytical, and postanalytical phases were 29.7+/-6.9, 13.9+/-4.1, and 0.02+/-0.13 min, respectively; 98.0% of the specimens were reported within 60 min. The remaining 2.0% were reported after 60 min with an average TAT of 68.7+/-11.3 min. Preanalytical phase delays were primarily responsible for the specimens reported between 60 and 90 min, and analytical phase delays were largely responsible for the few specimens (0.2%) reported after 90 min. For specimens reported between 60 and 90 min, the preanalytical phase was found to need improvement in order to shorten TAT; the main target for improvement was identified as the "waiting time for phlebotomy" step.
Chung
Hee-Jung
HJ
Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, 388-1 Pungnap-2dong, Songpa-gu, Seoul 138-736, Republic of Korea.
Lee
Woochang
W
Chun
Sail
S
Park
Hae-Il
HI
Min
Won-Ki
WK
D019411:Clinical Laboratory Techniques / Q000592:standards / Q000706:statistics & numerical data*; D003205:Computing Methodologies; D003955:Diagnostic Tests, Routine / Q000379:methods / Q000706:statistics & numerical data*; D017598:Efficiency, Organizational / Q000592:standards*; D006801:Humans; D007723:Korea; D008991:Monitoring, Physiologic / Q000379:methods; D010045:Outpatients; D018962:Phlebotomy / Q000379:methods / Q000706:statistics & numerical data; D013048:Specimen Handling / Q000379:methods / Q000706:statistics & numerical data; D013997:Time Factors