Overview

• Understand contamination signatures in molecular workflows, including carryover, aerosolized amplicons, reagent contamination, sample cross-talk, and workspace transfer.
• Design in-lab monitoring plans using environmental swabs, blank matrices, no-template controls, sentinel surfaces, and zone-specific sampling frequency.
• Interpret surveillance data with metric thresholds such as positivity rate, repeat contamination frequency, Ct drift, hotspot recurrence, and run rejection rate.
• Link contamination events to process layout, material flow, staff practices, reagent handling, and equipment decontamination routines.
• Review contamination detection frameworks for PCR, qPCR, genotyping, library preparation, and post-amplification processing environments.
• Build a practical contamination monitoring dashboard to support routine QC review and targeted corrective action planning.

Who should attend

• Assay developers, QC analysts, laboratory supervisors, validation teams, and contamination response leads.
• Molecular laboratory staff responsible for monitoring design, trend review, and corrective action implementation.
• Technical managers supporting environmental surveillance, process control, and laboratory quality systems.

Learning outcomes

• Examine how contamination risk differs across pre-amplification, amplification, post-amplification, storage, and shared-support laboratory zones.
• Define fit-for-purpose surveillance metrics for routine monitoring, event investigation, trending review, and process capability checks.
• Develop sampling schemes that balance surface selection, frequency, analytical sensitivity, blank design, and action threshold justification.
• Recognize false contamination signals caused by background nucleic acids, non-specific signal, carry-forward artifacts, and poor control interpretation.
• Connect contamination trend data with cleaning validation, zoning discipline, workflow redesign, and operator retraining priorities.
• Identify who should attend, including assay developers, QC analysts, laboratory supervisors, validation teams, and contamination response leads.

Agenda

• Session 1 maps contamination pathways and monitoring checkpoints across sample receipt, extraction, setup, amplification, and reporting workflows.
• Session 2 builds an environmental surveillance plan using zone classification, sample location ranking, blank placement, and response escalation logic.
• Participants draft action levels for monitoring metrics including contamination positivity, recurring surface events, and control-triggered investigations.
• Case discussion covers contamination episodes linked to reagent lots, workstation layout, pipetting practices, sample batching, and cleanup failure.
• Final working block converts trend observations into a contamination reduction roadmap with monitoring ownership and follow-up checkpoints.

Hands-on / Demonstrations

• Hands-on exercise reviews mock contamination datasets to identify hotspots, repeated failures, transient events, and likely process drivers.
• Environmental surveillance planning activity ranks sampling locations and assigns frequency by risk zone.
• Metric-setting exercise defines alert, action, and escalation thresholds for recurring contamination observations.

Deliverables

• Contamination surveillance worksheet.
• Metric threshold table.
• Hotspot review template.
• Investigation checklist.
• Action tracking format.
• Draft monitoring plan and contamination response framework.

FAQ

• Is the workshop only about post-PCR contamination? No, it addresses risk detection across the full laboratory workflow.
• Are metrics discussed quantitatively? Yes, the workshop covers threshold setting, trend windows, recurrence scoring, and alert interpretation.
• Can the framework support different assay platforms? Yes, the monitoring model is transferable across multiple molecular methods.
• What prior background helps? Familiarity with molecular workflows is useful, but contamination monitoring principles are explained clearly.