Background: An estimated 20-30% of inpatient standing labs are medically unnecessary1, contributing to iatrogenic anemia2, sleep disruption3, and increased healthcare costs. The Society of Hospital Medicine identified routine repetitive complete blood count (CBC) and chemistry (BMP) as a common wasteful inpatient practice4. At our institution, repetitive inpatient CBC, BMP, magnesium, and phosphorus account for 500,000 [...]