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, focus on choosing platforms and workflows that minimize manual intervention from sample receipt to result reporting.

Key ways immunoassay systems support walkaway automation

1. Sample loading and continuous access

   • Use analyzers that allow random-access loading rather than batch-only processing.
   • Continuous sample and reagent access reduces operator intervention and lets the system run longer unattended.

2. Integrated pre-analytical automation

   • Pair immunoassay analyzers with automated modules for:
     • barcode scanning
     • sorting
     • centrifugation
     • decapping/recapping
     • aliquoting
   • This reduces hands-on time and prevents bottlenecks before the assay begins.

3. Automated reagent management

   • Choose systems with:
     • onboard refrigerated reagent storage
     • automatic reagent identification
     • long onboard stability
     • low dead-volume reagent packs
   • This helps the analyzer run through more samples without staff refilling reagents.

4. Automated calibration and quality control

   • Select platforms with stable calibration curves and built-in QC rules.
   • Systems that support:
     • auto-dilution
     • automatic reruns
     • reflex testing
     • QC lockout handling
   • reduce the need for technologist oversight.

5. STAT and priority handling

   • Use analyzers that can interrupt routine workflows for urgent samples without stopping the entire run.
   • This preserves automation while maintaining clinical turnaround time.

6. Bidirectional LIS connectivity

   • Connect immunoassay instruments to the Laboratory Information System so orders, results, and flags flow automatically.
   • This minimizes manual data entry and result verification.

7. Exception-based workflow

   • Build the system around a “run until exception” model:
     • only abnormal flags
     • invalid samples
     • QC failures
     • low reagent alerts
     • maintenance prompts
   • Staff intervene only when the system detects a problem.

8. Predictive maintenance and remote monitoring

   • Use systems with:
     • remote diagnostics
     • service alerts
     • usage tracking
     • consumable forecasting
   • This helps prevent unplanned downtime and supports longer autonomous operation.

Practical implementation steps

• Map your current workflow and identify manual touchpoints.
• Measure turnaround time, hands-on time, and error rates before and after changes.
• Select immunoassay platforms with high throughput, onboard stability, and minimal maintenance.
• Integrate pre- and post-analytical automation instead of automating only the analyzer itself.
• Standardize QC and reflex rules to reduce operator decisions.
• Train staff for exception handling, not routine repetitive tasks.

What to look for when evaluating a system

• High throughput with continuous access
• Onboard reagent and sample capacity
• Auto-rerun and auto-reflex capabilities
• LIS connectivity
• Low maintenance frequency
• Remote diagnostics/support
• Compatibility with automation tracks and total lab automation systems

If you want, I can also help you design a walkaway automation workflow for a specific lab size (small, medium, or high-volume) or compare immunoassay platforms by automation features.