Reasons why the repeat order may be inappropriate:
(1) the second order was from a clinician unaware of the previous order
(2) there was an error at order entry
(3) there was a failure to cancel the test
Reasons why the repeat order may be appropriate:
(1) to check a result that may be in error
(2) to verify a key finding before acting
(3) to evaluate response to therapy
(4) interval change in the patient's condition
(5) verification of a point-of-care (POC) result according to protocol (very low or very high)
(6) different type of specimen
