Top 20 Interview Questions & Answers for Lab Technician Roles – 2025

Preparing for a lab technician job interview? This guide provides a list of essential questions and answers that will help you showcase your technical expertise, attention to detail and accuracy, and experience working in a laboratory setting. Whether you’re applying for a role as a medical lab technician, research lab technician, or industrial lab technician, these questions cover all key areas of the job.

General Questions

• 1. Why did you decide to become a lab technician?
  While my initial interest in science and biology sparked my curiosity about the role of a lab technician, it was during my undergraduate degree that I discovered my passion for the behind-the-scenes work that goes into scientific research and analysis. Becoming a lab technician allows me to combine my love for science with my attention to detail and accuracy, which is essential in this role.
• 2. What do you know about our laboratory and our work?
  In preparation for this interview, I researched your laboratory extensively and was impressed by the range of projects and studies you are currently working on. Your laboratory is known for its cutting-edge technology and innovative research, and I am excited about the opportunity to contribute to this important work.
• 3. How do you handle multiple projects and deadlines?
  As a lab technician, I understand the importance of prioritizing tasks and managing time effectively. I am highly organized and utilize a detailed lab notebook to keep track of experiments, results, and upcoming deadlines. I am also comfortable working independently and seek guidance from my supervisor when necessary to ensure all projects are completed in a timely manner.
• 4. How do you ensure accuracy and attention to detail in your work?
  Accuracy and attention to detail are crucial in a laboratory setting. To ensure I am producing accurate and reliable results, I follow strict protocols and procedures, double-check my work, and document all steps and observations. In addition, I am always willing to seek advice or clarification from my supervisor if needed.
• 5. How do you handle unexpected errors or setbacks in the laboratory?
  Mistakes and errors are inevitable in a laboratory setting. However, I am trained to handle them calmly and efficiently. I immediately notify my supervisor, thoroughly document the error, and take necessary corrective actions. I also use these setbacks as opportunities to learn and improve my methodology for future experiments.

Technical Skills & Experience

• 6. Can you explain your experience with laboratory equipment and tools?
  During my previous lab technician roles, I have gained experience in operating and maintaining a variety of laboratory equipment and tools such as microscopes, spectrophotometers, and centrifuges. I am also trained in troubleshooting any technical issues that may arise and keeping detailed records of equipment calibrations and maintenance.
• 7. How do you ensure compliance with safety protocols in the laboratory?
  Safety is of utmost importance in a laboratory setting. I always prioritize wearing appropriate personal protective equipment, following safety procedures, and properly disposing of hazardous materials. In addition, I regularly participate in safety training sessions to stay up-to-date with any changes or updates in safety protocols.
• 8. Have you ever encountered an unexpected obstacle during an experiment? How did you handle it?
  Yes, during one experiment, I encountered a contamination issue that was not anticipated. I immediately notified my supervisor, consulted with other team members, and together, we devised a new experimental approach to overcome the obstacle. This experience taught me the importance of adaptability and teamwork in a laboratory setting.
• 9. How do you approach troubleshooting and resolving technical issues?
  When troubleshooting, I first evaluate the issue and refer to equipment manuals or research articles to identify potential solutions. If necessary, I consult with my supervisor or other team members to brainstorm and implement the best course of action. I also document any troubleshooting steps and observations for future reference.
• 10. Can you provide an example of a complex laboratory protocol you have successfully executed?
  In my previous role, I conducted a multi-step experiment requiring precise timing and measurements. I meticulously followed the protocol, ensured accuracy and safety precautions at each step, and effectively communicated with my team members to coordinate simultaneous processes. Through my attention to detail and collaboration, the experiment was successful in producing valuable results.

Behavioral Questions

• 11. Describe a time when you had to work under pressure to meet a tight deadline.
  In my previous role, we had a sudden influx of samples that needed to be processed urgently to meet a project's deadline. I quickly organized my tasks, prioritized critical samples, and worked efficiently and accurately to complete the workload within the deadline. Despite the pressure, I maintained attention to detail and produced reliable results.
• 12. Tell me about a time when you encountered a difficult co-worker or team member.
  In a previous laboratory, I worked with a technician who had a different working style and often clashed with me when performing shared tasks. However, I took the time to understand and communicate with them effectively, compromising on certain work methodologies. This enabled us to work efficiently together and maintain a positive working relationship.
• 13. Give an example of a time when you showed attention to detail in your work.
  During an experiment, I encountered an unexpected observation that suggested a potential flaw in the test sample. I repeated the experiment, double-checking all my steps and variables, and discovered that a calibration error in one of the instruments had caused the issue. My attention to detail allowed me to identify the root cause and prevent any further errors.
• 14. How do you handle and incorporate feedback into your work?
  I believe feedback is essential for personal and professional growth. When given constructive criticism, I carefully listen and consider the suggestions, and work on incorporating them into my work. I also seek out feedback proactively from my supervisor and team members on a regular basis to continuously improve my skills and performance.
• 15. Tell me about a time when you had to adapt to a new laboratory environment and team quickly.
  In my current role, I was assigned to work in a new research laboratory with a different team with only a week’s notice. I made the effort to familiarize myself with the laboratory's procedures, equipment, and project goals before my start date. Once I joined the team, I proactively introduced myself, asked questions, and offered my support, which enabled me to integrate quickly into the new environment.

Situational Questions

• 16. How would you handle a sample mix-up in the laboratory?
  If I discovered a sample mix-up, I would immediately inform my supervisor and team members and work together to trace back the possible cause and identify the correct sample. I would then repeat the experiment using the correct sample and ensure accuracy and reliability in the data. Afterward, I would review the protocols and procedures to prevent similar mistakes from occurring in the future.
• 17. Imagine you are working on an experiment and have conflicting results. How would you address this issue?
  I would first review my experimental methodology and ensure that all instruments were calibrated correctly and protocols were followed accurately. If the issue persists, I would consult with my supervisor and team members to discuss potential variables that may have influenced the results. In addition, I would consider re-running the experiment or modifying the methodology to obtain conclusive results.
• 18. If you were handling a potentially hazardous material and discovered a leak, what would be your course of action?
  The safety of myself and my colleagues is of utmost importance in this situation. I would alert my supervisor and evacuate the laboratory immediately, following all necessary safety protocols. I would then assist in containing and cleaning up the leak under the guidance of my supervisor and ensure all proper measures are taken for safe disposal of the material.
• 19. How would you handle a situation where you were asked to perform a task you were not familiar with?
  I am comfortable taking on new tasks and learning new skills. If asked to perform a task I was not familiar with, I would first ask for clarification and any resources or guidance from my supervisor. I would then research and educate myself on the task and seek out feedback as I perform it to ensure accuracy and efficiency in completing the task.
• 20. Imagine you have completed a procedure, but your results do not align with previous findings. What would be your next steps?
  I would carefully review my work and methodology to determine any possible errors or differences from previous experiments. I would also consult with my supervisor and other team members to review the protocols and experimental design to identify any possible variables that may have affected the results. If necessary, I would rerun the experiment or modify the protocol for accurate and reliable results.