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What This Guide Helps With
Troubleshooting DxU Iris Workcell sample ID mismatches, result merge errors, barcode issues, or chemistry/microscopy result pairing concerns.
Step-by-Step Troubleshooting
Ensure Patient Safety First
Confirm the DxU Iris Workcell is not actively processing patient specimens before troubleshooting barcode, rack, workstation, or result merge issues.
If patient testing must continue, have laboratory staff use another validated analyzer or follow the approved downtime process.
Expected outcome: No patient result is released under the wrong specimen ID while the issue is unresolved.
Stop Releasing Questionable Results
Ask laboratory staff whether any results were released after the mismatch, merge error, or sample ID concern appeared.
Confirm whether affected specimens need to be held, repeated, manually reconciled, or reviewed according to laboratory policy.
Expected outcome: Potentially mismatched chemistry and microscopy results are not released without verification.
Confirm the Exact Complaint
Ask staff what they observed.
Check whether the issue involves:
- Chemistry and microscopy results not merging
- Results merging under the wrong sample ID
- Duplicate sample IDs
- Barcode read failure
- Manual ID entry error
- Rack position mismatch
- Workcell-to-workstation mismatch
- LIS or middleware rejection
- Results visible on the workstation but not matching in the LIS
Expected outcome: The issue is narrowed to barcode, rack handling, workstation merge logic, or LIS/middleware transmission.
Verify Specimen Identification
Inspect the sample tubes and labels for:
- Damaged barcode labels
- Wrinkled or curved labels
- Low-contrast print
- Partial barcodes
- Labels placed too high, too low, or at an angle
- Multiple barcodes on one tube
- Handwritten or manually relabeled specimens
Poor barcode quality is a common external cause of ID mismatch or failed result association.
Expected outcome: Labels are readable, correctly placed, and consistent with laboratory specimen ID requirements.
If correcting or replacing the label resolves the mismatch, document the finding and stop.
Check Rack Loading and Sample Order
Confirm that specimens were loaded in the correct rack and position according to the workcell workflow.
Ask whether any tube was removed, reinserted, swapped, skipped, or manually reordered during testing.
Expected outcome: Physical sample order matches the rack position and electronic worklist expectations.
If a loading or rack position error is found, have the lab repeat or reconcile affected samples per policy, document the cause, and stop.
Check for Duplicate or Reused Sample IDs
Ask staff whether the same sample ID was run more than once or manually entered on multiple specimens.
Review the workstation or result list for duplicate IDs, repeated accessions, or specimens with similar numbers.
Expected outcome: Each sample result is associated with one correct, unique specimen ID.
If duplicate IDs caused the issue, have the lab correct the workflow per policy and stop.
Verify Barcode Scanner Function
Check whether the barcode reader is consistently reading sample IDs.
Inspect the scanner window or read area for dust, urine residue, label debris, or obstruction.
Confirm scanner cables are secure if an external scanner or workstation scanner accessory is used.
Expected outcome: Barcode reads are consistent and match the label on the tube.
If cleaning the scanner window or securing the scanner connection resolves the issue, document the correction and stop.
Review Recent Workflow Changes
Ask whether the issue began after:
- New barcode label stock
- New printer ribbon or label printer maintenance
- LIS or middleware changes
- Workstation software update
- Rack workflow change
- Manual entry process change
- New operator workflow
- Downtime recovery
Expected outcome: Any recent change that may affect sample ID handling is identified.
If the issue correlates with a label, workflow, or LIS change, escalate to the lab supervisor, IT, or middleware team as appropriate.
Check Workcell Component Status
Confirm both connected parts of the workcell are online and communicating normally with the workstation.
Look for analyzer status messages, pending specimens, held results, communication warnings, or incomplete result records.
Expected outcome: Chemistry and microscopy results are both reaching the workstation and are available for proper merge.
If one side of the workcell is offline or delayed, do not force result release until result integrity is confirmed.
Confirm Workstation Date and Time
Verify that the DxU Iris workstation date and time appear reasonable and match facility time.
Time discrepancies can contribute to sorting, merge, or result association confusion, especially when multiple results are pending.
Expected outcome: The workstation time is correct and does not appear to be contributing to result sequence issues.
Check LIS or Middleware Status
Ask lab staff or IT whether the LIS or middleware is currently receiving, rejecting, holding, or modifying urine analyzer results.
Confirm whether the mismatch appears only on the analyzer workstation or only after transmission to the LIS.
Expected outcome: The fault location is separated between the DxU Iris Workcell/workstation and the external LIS or middleware system.
If the analyzer workstation shows correct pairing but the LIS does not, escalate to LIS/middleware support.
Restart Only When Safe
If no specimens are in process and staff confirm it is safe, restart the affected workstation or communication interface according to site practice.
Do not restart while samples are being processed or while unresolved results may still need review.
Expected outcome: Temporary workstation or communication hang clears without compromising pending results.
If restart restores proper result merge and no mismatched results remain, document the action and stop.
Run a Controlled Verification Sample if Allowed
With laboratory approval, have staff run a known test specimen, control, or non-patient verification sample using proper barcode workflow.
Confirm whether the sample ID, rack position, chemistry result, microscopy result, and LIS transmission align correctly.
Expected outcome: The workcell correctly associates and transmits results under the correct sample ID.
If verification passes, return the device to service per lab policy.
Do Not Manually Reassign Results Without Lab Approval
Clinical Engineering should not independently correct, merge, delete, or reassign patient results.
Any result correction must follow laboratory, LIS, and patient safety policy.
Expected outcome: Clinical Engineering supports troubleshooting without creating unauthorized result changes.
If the Problem Persists
If barcode quality, rack loading, duplicate IDs, workstation status, communication cables, scanner condition, and LIS/middleware status have been checked and the result merge or sample ID mismatch continues, common external causes have been ruled out.
The DxU Iris Workcell should be:
- Removed from service
- Labeled Out of Service
- Sent for repair, vendor support, workstation evaluation, or LIS/middleware escalation as appropriate
Knowing when to stop is proper troubleshooting. A recurring sample ID mismatch is a patient safety issue and should not be worked around.
Clinical Use Tip
Do not troubleshoot result merge or sample ID mismatch issues while active patient specimens are being processed. Move testing to another validated analyzer or downtime process first. Result integrity is more important than keeping the analyzer running.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Laboratory staff reported that DxU Iris Workcell chemistry and microscopy results were not merging correctly and one specimen showed a possible sample ID mismatch."
Cause
What was observed during troubleshooting.
Example:
"Inspection found a wrinkled barcode label on the affected urine tube and inconsistent barcode reads at the workstation."
Resolution
What action was taken.
Example:
"Testing was paused, affected results were held for laboratory review, the specimen label was corrected, scanner read function was verified, and a controlled sample processed with correct result merge."
Helpful Details to Include (If Known)
- Whether patient results were held, released, repeated, or corrected
- Exact mismatch or merge message displayed
- Sample ID or accession range affected, according to site privacy policy
- Barcode label condition
- Rack number and position involved
- Whether the tube was removed or reloaded
- Barcode scanner behavior
- Analyzer and workstation status indicators
- Whether chemistry and microscopy results were both present
- LIS or middleware transmission status
- Any recent LIS, middleware, label printer, or workflow changes
- Whether verification testing passed
- Final device status
Final Thought
Result merge and sample ID mismatch issues should be treated as patient safety concerns, not simple workflow annoyances. Start with external checks like labels, rack position, barcode reading, duplicate IDs, and communication status. Escalate when result integrity cannot be confidently verified, and document the complaint, cause, and resolution clearly.
That is successful troubleshooting.