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Table 5 Summary of add-on tests

From: Impact of add-on laboratory testing at an academic medical center: a five year retrospective study

Total number of add-ons

880,359

Unique ordering instances1

443,411

Number of patients

96,244

Average number of add-on tests per unique ordering instance

1.99

Average number of add-on tests per patient2

9.15

Estimated hours per day of manual effort for add-on testing prior to introduction of robotic archival storage/retrieval unit

30.7

Estimated hours per day of manual effort for add-on testing with use of robotic archival storage/retrieval unit

6.6

  1. 1These are unique add-on orders at a specific time
  2. 2This includes all add-on tests per each patient, which may span multiple unique ordering instances