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What This Guide Helps With
Troubleshooting poor urine particle images, dirty flow cell concerns, image artifacts, debris, or unclear microscopy images on the iQ200 Series.
Step-by-Step Troubleshooting
Ensure Patient Safety First
Confirm the iQ200 Series analyzer is not actively processing patient specimens before pausing operation, inspecting sample areas, or performing cleaning.
If patient testing is urgent, have laboratory staff use another validated analyzer or approved downtime process.
Expected outcome: Patient testing is not compromised while image quality is being evaluated.
Stop Testing and Confirm Result Integrity
Ask laboratory staff whether any patient samples were processed while poor image quality was present.
Confirm whether affected results were released, flagged, reviewed manually, or require repeat testing according to laboratory policy.
Expected outcome: Questionable urine microscopy results are not reported without proper review.
Verify the Image Quality Complaint
Ask staff what they are seeing on the analyzer.
Check whether the issue involves:
- Blurry images
- Dark or low-contrast images
- Excess debris in the image field
- Streaking or bubbles
- Repeated dirty flow cell message
- High review rate
- Unusual particle classification
- Poor images on every sample
- Poor images only on certain specimens
Expected outcome: The problem is confirmed as an image quality or flow cell cleanliness issue, not a LIS, sample ID, or operator review issue.
Check for Recent Sample or Workflow Changes
Ask whether the issue started after a change in specimen handling, sample type, tube type, rack loading, cleaning schedule, reagent, or maintenance activity.
Poor image quality can be caused by sediment-heavy samples, bubbles, carryover, improper mixing, or delayed processing.
Expected outcome: Any workflow-related cause is identified before assuming analyzer failure.
Inspect for Visible Fluid, Leaks, or Spills
Look around the analyzer, sample area, waste area, and accessible fluid paths for leaks, dried urine residue, crystallized material, or spilled specimens.
Do not continue testing if there is active leaking, unusual odor, fluid near electrical areas, or contamination around the analyzer.
Expected outcome: The analyzer is safe to inspect and does not show an obvious external fluid problem.
Confirm Proper Sample Preparation
Verify with laboratory staff that samples are being mixed and loaded according to lab procedure.
Settled sediment, clotted material, bubbles, or highly contaminated specimens can affect flow cell image quality.
Expected outcome: Sample preparation issues are ruled out before device failure is suspected.
Check for Bubbles or Foaming in Samples
Ask staff if samples are foamy, recently shaken, or producing bubbles during aspiration.
Bubbles passing through the flow cell may appear as image artifacts or interfere with particle recognition.
Expected outcome: Bubble-related image issues are identified and corrected through proper sample handling.
Verify Reagent, Diluent, and Fluid Supplies
Check that required fluids are present, not expired, properly connected, and seated correctly.
Confirm containers are not empty, kinked, blocked, or incorrectly installed.
Expected outcome: The analyzer has the proper fluids needed for image flow and cleaning functions.
Check Waste Container and Drain Path
Verify the waste container is not full and that external waste tubing is not kinked, pinched, blocked, or positioned incorrectly.
Poor drainage or backpressure can contribute to flow problems and dirty flow cell conditions.
Expected outcome: Waste flow is not restricting analyzer operation.
Inspect Accessible Tubing and Connections
Check user-accessible tubing and external fluid connections for loose fittings, air gaps, crystallization, dried residue, or obvious blockage.
Do not disassemble internal fluidic assemblies.
Expected outcome: External fluid path issues are corrected without entering internal repair.
Run the Approved Cleaning or Rinse Function
If the analyzer provides an operator-accessible cleaning, rinse, or flow cell cleaning function, have qualified staff run the approved cycle according to site procedure.
Do not use unapproved cleaning agents or improvised flushing methods.
Expected outcome: Dirty flow cell or debris-related image quality issues improve after proper cleaning.
Repeat Image Quality Check Using Known Acceptable Material
After cleaning, have laboratory staff run appropriate QC, control material, or an approved verification sample.
Review whether the images are clear, properly illuminated, and free of repeated debris, streaking, or bubble artifacts.
Expected outcome: Image quality returns to acceptable performance before patient testing resumes.
Check Whether the Issue Is Intermittent or Constant
If poor image quality occurs only occasionally, compare affected samples for heavy sediment, bubbles, unusual color, high viscosity, or delayed testing.
If every sample produces poor images, suspect a persistent flow cell, optics, fluidics, or imaging issue.
Expected outcome: The failure pattern helps determine whether the cause is sample-related or analyzer-related.
Review Error Messages and Maintenance History
Check the analyzer display, event log, or staff reports for dirty flow cell, fluidics, camera, focus, illumination, or cleaning-related messages.
Also review whether routine cleaning or maintenance is overdue.
Expected outcome: Troubleshooting is supported by actual analyzer behavior and maintenance history.
Power Cycle Only When Safe and Appropriate
If cleaning and external checks do not resolve the issue, restart the analyzer only when no samples are processing and after confirming with laboratory staff.
Expected outcome: Temporary software or initialization issues are cleared without interrupting active testing.
Do Not Continue Patient Testing if Image Quality Remains Poor
If images remain blurry, dirty, streaked, dark, or unreliable after external checks and approved cleaning, remove the analyzer from service.
Expected outcome: Patient results are protected from unreliable microscopy image interpretation.
If the Problem Persists
If poor image quality or dirty flow cell messages continue after sample handling, fluids, waste, tubing, cleaning, and restart checks are completed, the likely cause may involve internal flow cell contamination, optics, camera alignment, illumination, internal fluidics, or another service-level fault.
The device should be:
- Removed from service
- Labeled Out of Service
- Sent for repair, service evaluation, or bench troubleshooting
Knowing when to stop is proper troubleshooting. Do not perform internal disassembly, flow cell removal, optical alignment, or board-level repair unless trained and authorized for that service level.
Clinical Use Tip
Do not troubleshoot poor image quality while patient samples are actively being processed. If image reliability is in question, have the lab stop patient testing, preserve affected result information, and move testing to another validated method until the analyzer is verified.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Laboratory reported poor urine particle image quality and repeated concern for a dirty flow cell on the Beckman Coulter iQ200 Series analyzer."
Cause
What was observed during troubleshooting.
Example:
"Found no external leaks or supply issues; image quality improved after approved cleaning/rinse cycle and verification testing."
Resolution
What action was taken.
Example:
"Performed external fluid, waste, tubing, and sample handling checks; cleaning cycle completed; QC images reviewed by lab and analyzer returned to service."
Helpful Details to Include (If Known)
- Whether patient results were affected
- Exact image quality complaint
- Dirty flow cell message present or not
- Samples affected: all samples or specific specimens
- QC result before and after cleaning
- Cleaning or rinse cycle performed
- Reagent and fluid levels checked
- Waste container status
- Tubing kinks, air gaps, or residue found
- Any leaks, unusual odor, heat, or fluid near electronics
- Error messages or event log details
- Final device status
Final Thought
Poor image quality on an iQ200 Series analyzer should be handled as a patient result integrity issue, not just a cleaning complaint. Start with specimen handling, fluids, waste, tubing, and approved cleaning before suspecting internal optics or flow cell failure. Clear documentation protects the patient, the lab, and the technician.
That is successful troubleshooting.