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What This Guide Helps With
Addresses incorrect reagent recognition, station identification, inventory display, placement, labeling, configuration, or external reagent-handling conditions.
Step-by-Step Troubleshooting
1. Protect Specimens and Staining Quality
Do not process patient slides when required reagent identification or inventory information is unreliable. Hold or redirect specimens according to laboratory procedures until the correct reagent setup is verified.
Expected outcome: Patient specimens are not exposed to an uncertain staining process.
2. Confirm the Exact Reagent Problem
Determine whether the reagent is missing from the display, assigned to the wrong station, reported incorrectly, or not recognized after replacement. Record the reagent, station, and displayed message.
Expected outcome: The issue is defined clearly enough to distinguish physical placement from identification or configuration problems.
3. Verify the Correct Reagent and Container
Confirm the expected reagent is actually present in the intended station and that the container, insert, or vessel is appropriate for the configured workflow.
Expected outcome: The physical reagent setup matches the intended staining protocol. If correcting placement resolves the inventory display, troubleshooting can stop after verification.
4. Inspect Reagent Identification Information
Check accessible labels, identifiers, barcodes, or other recognition information for damage, contamination, poor placement, or mismatch with the reagent actually installed.
Expected outcome: Identification information is clean, intact, and consistent with the reagent in the station.
5. Verify Container Seating and Station Position
Confirm the reagent container is fully seated and correctly oriented. Inspect the station for foreign material, dried staining residue, or another obstruction.
Expected outcome: The reagent container is properly positioned with no visible obstruction. If recognition returns, proceed to final verification.
6. Review User-Accessible Reagent Assignment or Inventory Information
Without changing restricted configuration, compare the displayed station assignment and reagent information with the laboratory's approved staining setup.
Expected outcome: Displayed assignments agree with the physical reagent configuration. Incorrect entries should be corrected only through authorized, documented procedures.
7. Compare With a Known-Good Reagent Position or Container
When permitted, use a known-good compatible reagent container or compare recognition at an equivalent station to determine whether the issue follows the container or remains with one location.
Expected outcome: The test distinguishes a reagent/container issue from a station or system-level recognition problem.
8. Check for Recent Workflow or Configuration Changes
Ask whether reagents, staining protocols, station assignments, software configuration, or consumables were recently changed.
Expected outcome: Any change associated with the onset of the problem is identified and reviewed against approved laboratory configuration.
9. Perform Final Functional Verification
Confirm the intended reagent is displayed correctly, the station assignment matches the physical setup, and the system remains ready without recurring reagent warnings.
Expected outcome: Reagent recognition and inventory information remain correct and stable. The issue is resolved and troubleshooting can stop.
10. Escalate Persistent Recognition or Inventory Errors
If known-good reagents and correct physical placement still produce incorrect recognition or inventory information, do not bypass the condition or alter unsupported settings.
Expected outcome: The system is removed from affected use and evaluated for sensing, configuration, software, or other service-level issues.
If the Problem Persists
Common reagent placement, labeling, container, station, and accessible configuration causes have been ruled out. The remaining problem may involve internal detection hardware, station sensing, software configuration, inventory management, or another service-level fault.
Remove the device from service when reagent identity or staining quality cannot be assured, label it Out of Service, and send it for repair or bench evaluation. Use appropriate Leica Biosystems documentation and approved test equipment. Service configuration changes or repair should be performed only by qualified personnel.
Complete staining-system functional verification before return to service. Knowing when to stop external troubleshooting is proper troubleshooting.
Clinical Use Tip
Never process patient slides when the physical reagent setup and the reagent information displayed by the stainer do not agree.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Laboratory staff reported that a reagent station on the HistoCore SPECTRA ST was not being recognized correctly after reagent replacement."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found the reagent container was not fully seated in its intended station."
Resolution
What action was taken.
Example:
"Clinical Engineering reseated the container, confirmed the reagent and station were displayed correctly, verified normal readiness, and returned the unit to service."
Helpful Details to Include (If Known)
- Reagent and station involved
- Exact displayed inventory condition
- Container and label condition
- Physical station assignment
- Reagent seating and orientation
- Known-good container comparison
- Recent reagent or protocol changes
- Any recurring recognition warning
- Results before and after correction
- Final device status
Final Thought
Verify that the physical reagent setup matches the displayed configuration, rule out simple placement and identification problems first, confirm accurate recognition before use, and escalate unresolved discrepancies.
That is successful troubleshooting.