Median turnaround for routine outpatient blood work across the Winterfield lab network has fallen from 26 hours to six, following a change to how overnight processing is distributed.

What changed

All four labs previously processed everything they received. Each ran a full overnight service, and each ran it at low volume, which meant analyzers were warmed up and staffed for batches that were frequently in single figures.

Routine overnight processing is now consolidated at the Medical Center and Coastal labs. The North and Mesa labs continue to run urgent and inpatient work around the clock, and continue to run the full routine service during the day.

The samples travel. A courier run every ninety minutes moves specimens between sites, which was the part of the change that took longest to get right and the part most likely to fail quietly if it is not watched.

What it means in practice

  • Blood drawn at a morning clinic appointment is usually resulted the same afternoon.
  • Blood drawn in the afternoon is usually resulted before 9am the next day.
  • Urgent and inpatient turnaround is unchanged. It was already inside an hour and this work did not touch it.
  • Results appear in MyWinterfield as soon as they are verified, which for most routine tests is now the same day.

By the numbers

  • Median routine turnaround: 26 hours to 6 hours.
  • 90th percentile: 41 hours to 14 hours.
  • Urgent and inpatient turnaround: unchanged.
  • Courier runs between sites: every 90 minutes, 24 hours a day.
  • Specimens mislaid since the change: none.

The 90th percentile figure is the one the lab team watches. A good median with a long tail means a small number of patients are waiting a very long time, and those are disproportionately the results that matter.