How can I use immunoassay testing systems to improve walkaway automation in a diagnostics lab?

To improve walkaway automation in a diagnostics lab using immunoassay testing systems, the key is to choose and configure systems that reduce manual touchpoints from sample receipt through result verification. Here’s a practical approach:

1. Use fully integrated immunoassay analyzers

Select platforms that can automatically handle:

• Sample identification and centrifuge tracking
• Sample loading from racks or tubes
• Reagent management and onboard stability
• Automatic calibration and QC scheduling
• Result validation and transmission to LIS

This reduces the need for technologist intervention during routine runs.

2. Pair immunoassay systems with automated pre-analytics

Walkaway automation improves significantly when immunoassays are connected to:

• Track-based specimen handling
• Automated decapping
• Aliquoting and sorting
• Sample prioritization rules

This helps move specimens to the right analyzer with minimal manual handling.

3. Standardize high-volume testing on a single platform

If possible, consolidate frequently ordered assays such as:

• Thyroid testing
• Cardiac markers
• Infectious disease serology
• Hormones
• Tumor markers

Running common tests on one or two high-throughput systems simplifies workflow and reduces reruns, maintenance complexity, and operator variability.

4. Implement reflex and add-on testing rules

Configure the middleware/LIS so the system automatically:

• Adds confirmatory tests based on thresholds
• Reflexes positive screens to supplemental assays
• Orders repeat testing when QC or flags trigger it

This allows the analyzer to keep moving samples without waiting for manual review.

5. Optimize QC and calibration management

Choose systems with:

• Long calibration intervals
• Stable onboard reagents
• Automated QC lockout and release logic
• Predictive maintenance alerts

This prevents avoidable downtime and supports longer unattended operation.

6. Use middleware for auto-verification

Middleware can automatically verify results that meet preset criteria, such as:

• Within analytical measurement range
• No instrument flags
• QC in range
• Delta checks acceptable
• No critical value rule conflict

Auto-verification is one of the biggest enablers of walkaway operation.

7. Integrate consumables and inventory tracking

Automation is stronger when the system can alert before:

• Reagents run low
• Wash solutions are depleted
• Waste containers are full
• Coagulation or calibrator lots need replacement

This allows staff to service the system proactively rather than reactively.

8. Monitor performance metrics

Track metrics like:

• Samples per hour
• Hands-on time per test
• Repeat/failed assay rate
• Turnaround time
• % auto-verified results
• Analyzer downtime

Use these to identify bottlenecks and adjust staffing or configuration.

9. Match automation to test mix and volume

Immunoassay systems improve walkaway most when:

• Volume is steady
• Assays are routine and standardized
• STAT interruptions are limited
• Sample types are compatible with automation

For low-volume or highly specialized testing, full walkaway may be less efficient than a semi-automated setup.

10. Train staff for exception-based management

The goal is to have technologists manage:

• Exceptions
• QC failures
• Flagged results
• Maintenance
• Troubleshooting

instead of routine pipetting and sample handling.

If you want, I can also help you with:

• a workflow map for immunoassay walkaway automation,
• a vendor evaluation checklist, or
• a comparison of automation features to look for in an immunoassay platform.