Non-interruptive drug-lab alerts in ambulatory care.

To monitor potential adverse drug events, we devised a non-interruptive alert within our electronic medical record that prompted outpatient providers to order labs along with new prescriptions. When comparing control to intervention occurrences, we found the intervention had a non-significant impact on lab prescribing. The results of our prospective, randomized, controlled trial suggest that non-interruptive alerts are ineffective.