A binder full of instructions, and two of them disagree

A new technologist on second shift pulls the coagulation analyzer startup procedure to verify a new control lot. The bench binder holds a laminated quick-reference card taped to the analyzer that says the level 2 control must fall within the manufacturer-stated range. The controlled procedure in the electronic document system, COAG-SOP-014, version 7, says the control mean must fall within plus or minus 10 percent of the lot's assigned target on the certificate of analysis. The two documents were both physically present at the bench. Only one of them is current.

The Clinical Laboratory Improvement Amendments (CLIA), the federal rule that governs nonwaived testing in the United States, require a written procedure manual for every test the laboratory performs, and that manual must be available to and actually followed by personnel. A textbook, a laminated card, or a sticky note can supplement a controlled procedure. None of them can replace it, and none of them should ever contradict it.

The bench question is direct: how can a laboratory document tell the right person exactly what to do while remaining approved, current, traceable, and usable? Getting the words on the page right is only half the job. The other half is a control system that keeps the right version at the point of use, retires the wrong one so it cannot be acted on by accident, and keeps a record of who approved what and when.

The laminated card taped to the analyzer is exactly the kind of uncontrolled copy that control system exists to catch: it can drift out of date, disagree with the approved procedure, and carry no record of who approved it or when.

If two documents at the bench disagree, treat the controlled procedure as authoritative, stop using the uncontrolled copy, and report the conflict to the document owner the same shift you find it.