Extract:
“Hospitalized patients report less sleep in the hospital and an increased number of nocturnal awakenings, which has been associated with the development of delirium. Among the most prevalent and easily modifiable causes of nocturnal awakenings are early morning blood draws. A prior study at a single institution identified that nearly 40% of blood draws occur between 4:00 and 7:00 am and may directly contribute to sleep disruption. It remains unclear whether early morning phlebotomy is common practice in other health care jurisdictions and across a large sample of hospitals. The objective of this study was to evaluate the frequency of early morning blood draws in 18 hospitals in Ontario, Canada, and to assess variability in phlebotomy practices between institutions and over time.”
Reference:Colacci M, Loffler A, Roberts SB, Silverstein WK, Weinerman A, Verma AA, Razak F. Early Morning Blood Draw Timing and Frequency Among Hospitalized Patients. JAMA Netw Open. 2026 Mar 2;9(3):e260966. doi: 10.1001/jamanetworkopen.2026.0966. PMID: 41811321; PMCID: PMC12980245.