A Practical Safety Checklist for Low-Resource TB Laboratories
Tuberculosis laboratories work with specimens that may contain infectious Mycobacterium tuberculosis, often while managing limited space, staffing, equipment, and supplies. A useful safety checklist must therefore be practical enough for daily work, specific enough to reveal hazards, and flexible enough for different laboratory settings.
The strongest checklist is built around the actual specimen pathway: collection, receipt, processing, testing, waste management, storage, and reporting. It should cover engineering controls, safe work practices, personal protective equipment, incident response, training, and documentation without becoming a long form that staff complete mechanically.
The GLI Quality Tool offers a helpful framework because its four-phase roadmap connects laboratory safety with personnel, equipment, documents, assessment, and continual improvement. A safety checklist can use the same quality management approach while focusing on actions that protect workers, patients, visitors, and the surrounding community.
Start With Risks and Scope
Begin by identifying every activity that could generate infectious aerosols or expose staff to contaminated material. In a TB laboratory, this may include opening containers, preparing smears, pipetting, vortexing, centrifuging, manipulating cultures, cleaning spills, and disposing of used consumables. The risk assessment should consider the test method, specimen volume, room layout, ventilation, equipment condition, and staff experience.
The checklist should state which rooms, procedures, and personnel it covers. Include sample reception areas, microscopy rooms, molecular testing spaces, culture or drug-susceptibility testing areas, washing zones, waste holding points, and transport routes. If some activities are performed outside the laboratory, such as specimen collection or referral packaging, define the handover responsibilities clearly.
A short risk statement beside each checklist item makes the form more useful. For example, “centrifuge tubes are sealed before spinning” is stronger than “centrifuge safety checked” because staff can see exactly what is expected. Laboratories can also consult the user instructions to understand how the wider quality tool organizes implementation and evidence.
Build Controls Around the Workflow
Safety controls should follow the hierarchy of controls. First, reduce unnecessary handling and exposure through appropriate test selection, sealed systems, good workflow design, and clear separation of clean and contaminated activities. Next, maintain engineering controls such as biological safety cabinets, directional airflow where available, centrifuge safety cups, and effective ventilation. Administrative rules and PPE support these measures but should not replace them.
Map the specimen journey from arrival to final disposal. Check that containers are leak-resistant, labels are complete, request forms are separated from contaminated surfaces, and specimens are stored securely when testing is delayed. The checklist should verify that clean supplies do not cross paths with used materials and that staff can move through the room without reaching across open specimens.
Low-resource settings may rely on simple but effective controls. A dedicated work surface, a functioning lid on a centrifuge, a handwashing point with reliable water or alcohol-based hand rub, and a clearly marked waste route can substantially reduce risk. Each control should have an owner, a frequency, and a defined response when it is unavailable.
Use a Checklist That Can Be Verified
A practical form should record more than a tick mark. Each item needs a clear response such as “yes,” “no,” “not applicable,” or “needs immediate action,” along with space for a brief comment. Critical failures should be easy to identify so that a supervisor does not treat a missing safety cabinet certification like a minor housekeeping issue.
Use direct evidence wherever possible. Evidence might include a dated equipment check, a cleaning log, a training record, an incident report, an observed procedure, or a photograph controlled according to local policy. The person completing the checklist should record the date, area, and initials, while a supervisor reviews unresolved findings.
| Safety area | What to verify | Evidence to record | Response when missing |
|---|---|---|---|
| Specimen receipt | Containers are intact, labeled, and accepted using defined criteria | Receipt log or rejection record | Isolate the specimen, notify the responsible person, and document the decision |
| Aerosol-generating work | Procedures are performed with suitable containment and trained staff | Observation record and training file | Stop the activity until a safe method or control is available |
| Biological safety cabinet | Cabinet is used correctly and certification or maintenance is current | Certification label, service report, or local check | Suspend relevant work and escalate for repair or certification |
| Centrifugation | Sealed buckets or safety cups are available, intact, and loaded correctly | Equipment checklist and inspection date | Do not centrifuge open or damaged containers |
| PPE | Required gloves, coats, eye protection, and respiratory protection are available and used correctly | Stock check and direct observation | Replace supplies, correct practice, and record the gap |
| Decontamination | Work surfaces, spills, reusable items, and waste receive defined treatment | Cleaning and spill logs | Restrict access, perform approved decontamination, and investigate |
| Waste management | Infectious waste is segregated, labeled, stored, and removed safely | Waste log or disposal record | Secure the waste and arrange an approved disposal route |
| Incident response | Staff know how to report exposure, spills, injuries, and equipment failure | Drill, report, or interview record | Provide immediate care, notify management, and initiate follow-up |
Use a daily version for high-risk operational checks and a monthly or quarterly version for broader system checks. Combining both into one oversized form can reduce completion quality. A short daily sheet might cover cabinet operation, PPE, disinfectant availability, waste, and incidents, while a periodic review examines training, maintenance, ventilation, emergency supplies, and corrective actions.
Make Personal Protection Dependable
PPE must be available at the point of use, in suitable sizes, and replaced before it becomes unusable. A checklist should verify stock levels, storage conditions, correct donning and removal, and disposal or decontamination arrangements. Gloves should never be treated as a substitute for hand hygiene, and staff should know when respiratory protection is required by the laboratory’s risk assessment and national guidance.
Training should be practical rather than limited to a signed attendance sheet. Supervisors can observe whether staff open specimens safely, load centrifuge cups correctly, remove gloves without contaminating their hands, and respond to a simulated spill. New staff need orientation before independent work, while experienced staff require periodic competency checks and refresher training after procedure changes or incidents.
Include occupational health arrangements where they exist. Staff should know how to report symptoms, exposures, sharps injuries, eye splashes, and respiratory incidents confidentially and promptly. The checklist can verify that emergency contacts, first-aid materials, eyewash or suitable flushing facilities, and post-exposure procedures are accessible.
Connect Safety With Quality Management
Safety is one part of a laboratory quality management system, not a separate activity. Link checklist findings to the Quality Systems Essentials covering personnel, equipment, purchasing and inventory, process management, documents and records, assessment, and continual improvement. This prevents recurring safety problems from being treated as isolated housekeeping defects.
Documents should be controlled and accessible at the workstation. Procedures need revision dates, approval, and clear instructions for spill management, waste handling, equipment failure, PPE, specimen rejection, and exposure reporting. If staff are using several conflicting versions, the checklist should record this as a document-control problem requiring corrective action.
Equipment management is equally important. Keep an inventory of biological safety cabinets, centrifuges, autoclaves, refrigerators, microscopes, and other relevant devices. Record preventive maintenance, calibration or verification where applicable, breakdowns, and the effect of downtime on testing. When resources are scarce, prioritizing critical equipment based on risk helps management direct funds where they provide the greatest protection.
Review, Escalate, and Improve
A checklist has value only when findings lead to decisions. Classify deficiencies by urgency: immediate danger, significant risk requiring prompt correction, and routine improvement. Assign each action to a named person with a due date. The laboratory manager should review overdue actions and document whether the control was restored, the risk was accepted temporarily, or an alternative was introduced.
Look for patterns rather than counting ticks. Repeated shortages of gloves may indicate weak stock control; repeated cabinet failures may indicate inadequate maintenance funding; repeated PPE errors may indicate poor training or unsuitable equipment. Trend reviews can use simple counts and monthly summaries when electronic systems are unavailable.
The downloadable materials from the GLI Quality Tool can help laboratories adapt a structured approach to local procedures, forms, and implementation priorities through the downloadable materials. Adaptation should preserve the intent of each control while using terms, responsibilities, and resources that staff recognize.
Actions That Make the Checklist Usable
- Keep daily checks short enough to complete before work begins, with separate periodic reviews for management-system requirements.
- Mark critical controls clearly and define which activities must stop when those controls fail.
- Assign every corrective action to a person, deadline, and source of verification.
- Review checklist trends during laboratory quality meetings and connect recurring findings to budgets, training, maintenance, or procedure changes.
- Test the checklist through observation and a simulated spill or exposure response before making it routine.
A well-designed safety checklist becomes part of the laboratory’s operating rhythm: staff use it before work, supervisors verify it during work, and managers act on its findings afterward. Start with the highest-risk TB procedures, pilot the form in one work area, revise unclear items, and then extend it across the laboratory.
Use the GLI quality management framework to turn local observations into documented controls and measurable improvement. With consistent review, even a low-resource laboratory can strengthen biosafety, protect its workforce, and make reliable TB testing safer for everyone involved.