In the present study, the RPIs were differentiated by taking into account the variable lengths of unattended time that are useful for performing other tasks in the different laboratory organizations.
UT)] (results/operator-hour): Number of reportable results/Processing time - sum of unattended time
A differentiation of RPI was made by the different unattended time (UT) values given.
The RPI value for the maximum length of unattended time is by definition equal to the throughput because above this maximum the sum of unattended time is zero.
aut)] values were calculated by adding the periods of hands-on labor time used for sample handling to the unattended time (Table 2).
For these laboratories, long unattended times are of more importance than high throughput.