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Health Science

Lab Technician Interview Questions and Answers

Lab technicians conduct scientific tests and analyses in clinical, research, or industrial laboratories. They prepare samples, operate instruments, record data, and maintain quality control to support medical diagnoses and research.

20 practice questions with explanations and sample answers.

  1. 1. Why do you want to work as a lab technician?

    What the interviewer is looking for

    Show interest in science and precise work.

    Sample answer

    I am meticulous and enjoy contributing to scientific discovery and patient care. Lab work requires precision, which I value.

  2. 2. Describe your experience with sample collection and preparation.

    What the interviewer is looking for

    Handling, labelling, and processing specimens.

    Sample answer

    I have collected and prepared blood, urine, and tissue samples, ensuring proper labelling and storage.

  3. 3. What is your experience with laboratory instruments (e.g., microscopes, centrifuges, analysers)?

    What the interviewer is looking for

    Operate and maintain equipment.

    Sample answer

    I operate centrifuges, microscopes, and automated analysers, performing routine maintenance and calibration.

  4. 4. Describe a time you identified an error in test results.

    What the interviewer is looking for

    Show problem‑solving and quality control.

    Sample answer

    I noticed inconsistent results and traced it to a reagent issue, which I replaced and retested.

  5. 5. How do you maintain quality control and documentation?

    What the interviewer is looking for

    Follow SOPs and record accurately.

    Sample answer

    I follow standard operating procedures and maintain detailed records of all tests and calibrations.

  6. 6. What safety protocols do you follow in the lab?

    What the interviewer is looking for

    PPE, chemical handling, and waste disposal.

    Sample answer

    I wear appropriate PPE, handle chemicals safely, and dispose of waste according to guidelines.

  7. 7. Why do you want to work at our laboratory?

    What the interviewer is looking for

    Mention their specialty or reputation.

    Sample answer

    Your lab has a strong reputation in pathology. I want to contribute to quality diagnostics.

  8. 8. What is your long‑term career goal?

    What the interviewer is looking for

    Become a senior lab scientist or manager.

    Sample answer

    I aim to become a laboratory supervisor or specialist in a diagnostic area.

  9. 9. How do you stay current with laboratory techniques?

    What the interviewer is looking for

    Read journals and attend training.

    Sample answer

    I read scientific journals and attend workshops on new techniques.

  10. 10. Describe a time you worked under pressure to meet a deadline.

    What the interviewer is looking for

    Stay focused and organised.

    Sample answer

    During flu season, we had a high sample volume. I prioritised urgent tests and maintained accuracy.

  11. 11. What is your experience with molecular biology techniques (PCR, electrophoresis)?

    What the interviewer is looking for

    If applicable.

    Sample answer

    I have performed PCR and gel electrophoresis for genetic testing.

  12. 12. How do you handle a situation where a sample is damaged or contaminated?

    What the interviewer is looking for

    Document and reject if needed.

    Sample answer

    I document the issue and, if necessary, request a new sample.

  13. 13. What is the most important quality for a lab technician?

    What the interviewer is looking for

    Accuracy or attention to detail.

    Sample answer

    Accuracy – even small errors can have significant consequences.

  14. 14. How do you prioritise tests when you have a heavy workload?

    What the interviewer is looking for

    Triage by urgency and time sensitivity.

    Sample answer

    I prioritise based on clinical urgency and test stability.

  15. 15. Describe a time you worked with a team in the lab.

    What the interviewer is looking for

    Collaborate and share tasks.

    Sample answer

    I coordinated with colleagues to run tests efficiently and share results.

  16. 16. What is your experience with laboratory information systems (LIS)?

    What the interviewer is looking for

    Data entry and retrieval.

    Sample answer

    I am proficient in LIS for logging results and accessing patient data.

  17. 17. How do you ensure you are following ethical and regulatory standards?

    What the interviewer is looking for

    Follow guidelines and report issues.

    Sample answer

    I follow all regulatory guidelines and report any concerns to my supervisor.

  18. 18. Describe a time you improved a lab process.

    What the interviewer is looking for

    Show initiative.

    Sample answer

    I suggested a new method for labelling samples, reducing misidentification errors.

  19. 19. What is your experience with microbiology or histology?

    What the interviewer is looking for

    If applicable.

    Sample answer

    I have experience in microbiological culturing and Gram staining.

  20. 20. How do you handle the disposal of hazardous materials?

    What the interviewer is looking for

    Follow safety protocols.

    Sample answer

    I dispose of hazardous waste according to safety regulations.

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