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What This Guide Helps With
Troubleshooting barcode read failures caused by label quality, scanner obstruction, specimen position, workflow, or external accessory issues.
Step-by-Step Troubleshooting
Ensure Patient Safety First
Confirm the Urisys 1800 is not actively processing patient specimens before troubleshooting the barcode issue.
If patient testing must continue, have laboratory staff use an approved backup process for specimen identification and result documentation.
Expected outcome: No patient result is associated with an unreadable or incorrect specimen ID.
Verify the Barcode Complaint
Ask staff what is occurring during scanning.
Confirm whether the issue is:
- No barcode read
- Intermittent reads
- Wrong or incomplete ID captured
- Barcode rejected by the analyzer
- Only certain specimens failing
- Failure after label, LIS, or workflow changes
Expected outcome: The failure pattern is understood before assuming scanner failure.
Check Specimen Identification Safety
Confirm with laboratory staff that any specimens affected by barcode failure are manually verified according to lab policy.
Do not allow testing to continue if the analyzer may associate results with the wrong patient or sample.
Expected outcome: Patient/specimen mismatch risk is controlled.
Inspect the Barcode Label
Check the label for wrinkles, smears, low contrast, fading, chemical contamination, torn edges, or poor print quality.
Verify the barcode is not wrapped around the tube so tightly that the scanner cannot see the full code.
Expected outcome: Barcode labels are readable, flat, clean, and properly positioned.
If replacing or reprinting the label resolves the issue, return the analyzer to service and stop.
Test With a Known-Good Barcode
Use a specimen tube or test label that is known to scan correctly on another compatible analyzer or workstation.
Expected outcome: A known-good barcode helps separate label problems from analyzer/scanner problems.
If the known-good barcode reads correctly, the issue is likely label quality, barcode format, or specimen setup.
Check Barcode Format Compatibility
Confirm the barcode type being used is approved for the lab’s Urisys 1800 workflow.
Ask whether the lab recently changed label printers, label templates, middleware, LIS configuration, or barcode symbology.
Expected outcome: Barcode format changes are identified before hardware is suspected.
Verify Tube and Label Placement
Confirm the specimen tube is loaded in the correct orientation and seated properly in the rack or carrier.
Make sure the barcode faces the scanner path and is not blocked by the rack, tube cap, overlapping label, or specimen residue.
Expected outcome: The scanner has a clear line of sight to the barcode.
Inspect the Scanner Window or Read Area
Look for dust, urine residue, dried disinfectant, adhesive, label fragments, or scratches near the barcode read area.
Clean only with facility-approved materials and Roche-compatible cleaning practices.
Expected outcome: The scanner path is clean and unobstructed.
If cleaning restores barcode reads, document the contamination and return the analyzer to service after verification.
Check for Environmental Interference
Look for strong direct light, glare, reflective labels, or nearby changes in bench lighting that could interfere with barcode reading.
Reposition the analyzer or shield the scan area only if allowed by facility setup and lab workflow.
Expected outcome: Barcode reading is not affected by glare or lighting conditions.
Confirm Analyzer Startup and Error Status
Check whether the Urisys 1800 completes startup normally without scanner, rack, transport, or system errors.
Review any displayed barcode-related message or fault code and record the exact wording.
Expected outcome: Barcode failure is not part of a broader analyzer startup or transport issue.
Check Rack or Sample Transport Behavior
Observe whether racks move smoothly and stop in the expected scan position.
Listen for unusual motion, hesitation, repeated attempts, or failure to advance.
Expected outcome: The barcode scanner is not being blamed for a sample positioning or transport issue.
Restart the Analyzer if Safe
If no patient testing is active and staff approve, power the analyzer down and restart it according to site procedure.
After startup, test barcode reading with a known-good label.
Expected outcome: A temporary software or communication hang is cleared.
If barcode scanning works after restart, monitor briefly and document the recovery.
Check External Communication Workflow
If the barcode scans but is rejected, verify whether the issue is actually LIS, host, worklist, or patient ID validation related.
Confirm whether the scanned ID appears on the analyzer before rejection.
Expected outcome: Scanner failure is separated from data validation or middleware rejection.
Compare Manual Entry Behavior
Have authorized lab staff manually enter a specimen ID if permitted by policy.
Confirm whether the analyzer accepts manual entry and proceeds normally.
Expected outcome: If manual ID entry works, the issue is isolated to barcode reading, label format, scanner alignment, or scanner hardware.
Repeat With Multiple Labels and Racks
Test several known-good labels from different print batches or specimen sources.
Test more than one rack or carrier if available.
Expected outcome: The issue is narrowed to one label batch, rack, tube position, or the analyzer barcode system.
If the Problem Persists
If barcode read failure continues after label quality, barcode format, tube placement, scanner cleanliness, rack positioning, startup status, and LIS rejection have been ruled out, the issue is likely internal to the barcode scanner, scanner alignment, transport positioning, or analyzer control system.
The Urisys 1800 should be:
- Removed from service if patient identification cannot be reliably confirmed
- Labeled Out of Service
- Sent for repair, vendor service, or bench evaluation
Knowing when to stop is proper troubleshooting. Do not continue testing on an analyzer that may misread or fail to associate patient specimens correctly.
Clinical Use Tip
Do not troubleshoot barcode identification failures while actively processing patient samples. A barcode issue is a patient safety issue because it can create wrong-patient or wrong-specimen result risk. Move testing to a validated backup workflow before continuing.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Laboratory staff reported the Roche Urisys 1800 would not read specimen barcodes during sample loading."
Cause
What was observed during troubleshooting.
Example:
"Found multiple specimen labels wrinkled and partially blocked by the rack, preventing reliable scanner line-of-sight."
Resolution
What action was taken.
Example:
"Repositioned and reprinted affected barcode labels, verified successful reads with known-good specimens, and returned the analyzer to service."
Helpful Details to Include (If Known)
- Barcode label condition checked
- Known-good barcode tested
- Barcode format or label printer changes
- Scanner window cleaned
- Rack or carrier inspected
- Tube orientation verified
- Exact barcode error message
- Manual ID entry result
- LIS or middleware rejection observed
- Power behavior during restart
- Environmental factors such as glare or lighting changes
- Indicator lights or displayed scanner status
- Final analyzer status
Final Thought
Barcode troubleshooting on a urine analyzer should always start with patient identification safety. Rule out label quality, tube placement, scanner obstruction, rack positioning, and workflow issues before escalating. Clear CCR documentation helps show whether the issue was corrected externally or appropriately sent for repair.
That is successful troubleshooting.