Practical protocols for hand hygiene and glove use in TB laboratories
Tuberculosis laboratories handle respiratory specimens, cultures, molecular test materials, chemicals, and disinfectants that can expose staff to infectious agents or hazardous substances. A clear hand hygiene and glove policy helps reduce contamination, protects personnel, and supports reliable test results. The policy should be written for the actual workflow, equipment, staffing, and supplies available in the laboratory.
Writing guidelines for TB lab staff hand hygiene and glove use protocols requires more than stating “wash hands before and after work.” Staff need specific instructions for when hygiene is required, which gloves to select, how to remove them, what to do after an exposure, and how supervisors will check compliance. The language should be simple enough for routine use and precise enough for assessment.
A useful protocol connects infection prevention with the laboratory’s quality management system. It should align with local regulations, biosafety procedures, facility policy, and the risks associated with specimen reception, processing, testing, waste handling, and cleaning. It should also include a review date so that procedures can change when new equipment, methods, or risks are introduced.
Define the risks and the moments for action
Begin by describing where hand contamination may occur. In a TB laboratory, relevant activities can include opening specimen containers, preparing smears, loading automated instruments, handling culture materials, touching work surfaces, removing waste, and cleaning spills. The protocol should distinguish between activities involving potentially infectious material and routine administrative tasks.
Specify the moments when hand hygiene is mandatory. These normally include before entering the work area, before putting on gloves, immediately after removing gloves, after contact with specimens or contaminated surfaces, after a spill or splash, before leaving the laboratory, and before eating, drinking, smoking, or touching the face. Hands should also be cleaned after using the toilet and whenever visible contamination is present.
The written procedure should explain that gloves do not replace hand hygiene. Moisture and microorganisms can pass through small defects, and hands may become contaminated while gloves are removed. Staff should clean and dry their hands before donning gloves and perform hand hygiene again after glove removal. If hands are visibly soiled, soap and running water are required; an alcohol-based hand rub may be used when hands are not visibly dirty and the product is approved for the setting.
Match glove use to the task
The protocol should identify which tasks require disposable examination gloves and which require heavier, reusable, or chemical-resistant gloves. Glove selection depends on the activity, the specimen, the disinfectant, the possibility of puncture, and the manufacturer’s instructions. Powder-free disposable gloves are generally preferable because powder can irritate skin and interfere with some procedures.
Gloves should be intact, correctly sized, and changed between tasks when contamination could be transferred. Staff should replace them immediately if they tear, become visibly contaminated on the outside, or are exposed to a chemical that may compromise the material. A single pair should not be worn from specimen processing to telephones, keyboards, door handles, or paperwork.
The procedure should prohibit washing, disinfecting, or reusing disposable gloves unless a validated local process specifically permits it. Glove removal must be described as a deliberate sequence: pinch the outside of one glove near the wrist, peel it away from the hand without touching the skin, hold the removed glove in the still-gloved hand, slide ungloved fingers under the remaining glove at the wrist, and peel it over the first glove. Dispose of the bundle in the correct waste stream, then clean the hands.
Write instructions that fit the laboratory workflow
A practical protocol starts with its purpose, scope, responsibilities, definitions, and required supplies. It should name the staff covered, including technologists, cleaners, students, maintenance personnel, visitors, and supervisors who enter controlled areas. Responsibilities should state who checks stock, who trains staff, who investigates nonconformities, and who approves revisions.
Use short action statements in the order that work is performed. For example, “Remove rings and watches where they interfere with hand cleaning or glove use,” “Cover cuts with a secure dressing,” and “Keep clean gloves away from specimen containers and used materials.” Avoid vague wording such as “maintain good hygiene” unless it is followed by observable actions.
The protocol should also explain exceptions. Staff with dermatitis, allergies, or frequent skin irritation need access to occupational health advice and suitable products. Handwashing facilities should be accessible, supplied, and maintained. If water is unavailable, the protocol must state the temporary control measures and who must be notified rather than encouraging staff to continue routine work without an appropriate alternative.
| Work situation | Hand hygiene instruction | Glove instruction | Additional control |
|---|---|---|---|
| Before entering the testing area | Clean and dry hands | Put on gloves only after hand hygiene | Check gown, eye protection, and mask as required |
| Handling specimens | Clean hands before gloving | Use suitable disposable gloves; change if torn or heavily contaminated | Keep containers closed except during the required step |
| Moving from dirty to clean work | Remove gloves and clean hands | Put on a new pair if gloves are required | Disinfect shared surfaces and equipment controls |
| After a spill or splash | Remove contaminated PPE safely, then wash hands | Replace damaged or contaminated gloves | Follow the exposure and spill response procedure |
| Leaving the laboratory | Remove gloves in the designated area and clean hands | Do not wear laboratory gloves in offices or public spaces | Dispose of waste through the approved route |
Control supplies and work-area conditions
A hand hygiene policy will fail if supplies are difficult to find or frequently unavailable. The laboratory should identify minimum stock levels for soap, approved hand rub, disposable towels, gloves in appropriate sizes, waste bags, and skin protection products. Assign a person or role to inspect supplies at a defined frequency and record shortages before they affect testing.
Stock management should include alternatives that have been assessed for compatibility and safety. Substituting an unfamiliar disinfectant, glove material, or hand rub without review may create skin reactions, damage equipment, or reduce effectiveness. When supply interruptions occur, staff should follow a documented response rather than improvising; the guidance on managing reagent stockouts offers a useful model for assigning responsibility, documenting the problem, and protecting continuity of work.
Sinks, dispensers, and waste bins should be positioned near points of use without creating splash or traffic hazards. Taps and dispenser levers can become contaminated, so the cleaning schedule should identify them specifically. Where possible, hands-free fixtures reduce contact with shared surfaces. Disposable towels should be preferred when drying hands in a controlled laboratory environment, and reusable cloth towels should not be shared.
Train, observe, and respond to nonconformities
Training should occur during induction and whenever the protocol, equipment, or test method changes. Demonstrations should cover hand rubbing or washing, glove selection, donning, removal, disposal, and actions after a splash or puncture. Staff should demonstrate the procedure, not merely sign an attendance sheet. Refresher training can be triggered by repeated observations, an incident, or a change in local risk.
Supervisors can use brief, respectful observations to check whether staff clean their hands at the required moments, change gloves appropriately, and keep gloved hands away from clean items. Monitoring should focus on system improvement rather than blame. Findings can be recorded as compliant, partially compliant, or requiring corrective action, with a responsible person and due date for each action.
Laboratories preparing for external review can connect these records with broader quality activities. The guidance on preparing for a WHO SLMTA assessment can help teams organize evidence such as approved procedures, training records, stock checks, observation forms, incident reports, and management review notes.
Document incidents and review the procedure
The protocol should state what staff must do after a needlestick, splash to the eyes or skin, glove tear, or suspected contamination of a clean area. Immediate actions may include stopping work safely, washing or flushing the affected area, notifying a supervisor, seeking medical evaluation, and documenting the event according to facility policy. The procedure should provide contact details or a clear route to occupational health support.
Incident records should capture what happened, the task being performed, the equipment involved, the PPE used, the immediate response, and the corrective action. Avoid recording unnecessary personal information in documents that are widely accessible. Trend reviews can reveal recurring problems such as poor glove sizing, inadequate dispenser placement, unclear waste routes, or insufficient staffing during busy shifts.
Review the protocol at a defined interval and after significant changes. A review should consider monitoring results, staff feedback, exposure events, product availability, updated national guidance, and changes in laboratory methods. The document should show its version number, approval date, effective date, document owner, and next review date so staff can identify the current copy.
Recommendations for implementation
- Write the procedure around real TB laboratory tasks, from specimen receipt through waste disposal.
- State exactly when hand hygiene and glove changes are required, including transitions between clean and contaminated activities.
- Keep approved gloves, hand-cleaning products, towels, and waste containers available at every relevant point of use.
- Train staff through demonstration and observation, then record competency and follow-up actions.
- Review incidents, supply interruptions, and audit findings together to identify practical system improvements.
A well-written protocol turns basic hygiene expectations into consistent behavior. Post a concise version at sinks, glove stations, and laboratory entrances, while keeping the controlled procedure available through the quality system. Assign ownership, begin routine observations, and update the document when evidence or laboratory practice changes. These steps help protect staff, reduce cross-contamination, and strengthen dependable TB testing across varied resource settings.