Reducing the numbers of Test Not Done due to improper laboratory collection or mislabeled certainly would decrease the waste and health care cost.

First, TNDs would require duplicate specimen collection done by other healthcare professionals e.g. respiratory therapists to collect mini BAL or ETA or nurses/phlebotomists to do another blood draw. The risk of nosocomial infection is even higher if the specimen collection requires invasive procedures such as CSF, sterile body fluids, etc. In the case of outpatient setting, patients need to be called in to schedule another appointment.

Second, TNDs also require a high amount of time for the labs to do the investigative work to call the wards or the doctors  and to explain why the tests are not done. This step is necessary to complete the documentation for the TNDs as these paperworks are required to be kept for 2 years.

Third, it is obvious that TNDs impede the turn around time for laboratory results which may affect the treatment and patient's wellbeing.