work instruction

A work instruction gives focused, task-level directions for a specific activity. It may explain how to prepare a reagent, perform an instrument shutdown, package a referral specimen, or complete a particular check. Compared with a broader procedure, it usually has a narrower scope and more immediate operational detail. Laboratories may use different document names, so the intended function matters more than the label.

Useful instructions identify prerequisites, critical steps, acceptance criteria, precautions, and the record that proves completion. Diagrams or photographs can help where text alone is ambiguous, but they also require review when equipment or practice changes. A short bench guide that directs work is still subject to appropriate document control. It should agree with the governing procedure rather than introduce conflicting requirements.

For accreditation, work instructions help translate approved processes into consistent actions at the bench. Assessors may check whether locally created notes have become unofficial procedures. Bring useful task aids into the controlled system and verify that staff understand the decisions behind the steps, especially where a deviation could affect patient safety or result validity.