Medical and laboratory RFID field guide
RFID can strengthen sample handoff and location evidence, but it does not by itself prove sample integrity, patient identity or clinical result. Define every custody transition, required human or system confirmation, environmental evidence and exception before selecting tags and readers.
Samples may pass through collection, transport, receipt, preparation, analysis, temporary storage and disposal. Each stage has different packaging, environmental and access conditions.
01
Before comparing models, frequencies or read ranges, fix the process boundary, accountable owner and evidence the operation must produce. Record these decisions in the project scope.
02
RFID results depend on the item, environment, movement, device configuration and event logic together. Control risk through design constraints and exception handling rather than post-deployment interpretation.
03
Test representative tubes, racks, bags, liquids, freezers and transport containers with realistic density and handling. Include mismatches, missing samples, unreadable tags, unauthorized access, delayed events and manual recovery.
The LIS or designated clinical system remains the authority for orders and results. RFID middleware should publish bounded custody evidence with source, actor, place and time while minimizing sensitive data on the tag.
First turn the physical read into an explainable, traceable business event; then decide whether it satisfies the target workflow. Results that have not been validated at the target site should not be presented as a universal performance promise.
Review the responsibility boundaries across tags, devices, middleware and business systems together, and support acceptance with a written method, denominator and exception record.
It provides identity or presence evidence. The workflow still needs association, authorization, process-state and quality controls.
Prefer the minimum identifier needed to resolve an authorized record. Privacy and security requirements must be assessed for the applicable jurisdiction.
It may complement or replace a capture step after validation, but human-readable and barcode fallbacks may still be needed for interoperability and downtime.
Share the sample lifecycle, containers, environment, LIS boundary, privacy controls and exception cases. REAOX can define a controlled custody pilot.
