# Early Morning Blood Draw Timing and Frequency Among Hospitalized Patients

## TL;DR

This study examines how often early morning blood tests are performed in Ontario hospitals and how these practices vary over time and between hospitals.

## Contribution

The study provides new insights into the variability of early morning blood draw practices across multiple hospitals.

## Key findings

- Early morning blood draws are common in hospitalized patients.
- There is significant variability in phlebotomy practices between hospitals.
- Phlebotomy practices also vary over time within the same institutions.

## Abstract

This cohort study evaluates the frequency of early morning blood draws in 18 hospitals in Ontario, Canada, and assesses variability in phlebotomy practices between institutions and over time.