Laboratory Technician Interview Questions
The most common interview questions for a Laboratory Technician role, what employers are really measuring with them and how to prepare.
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Start Interview Prep →Most Common Laboratory Technician Interview Questions
1. Which laboratory department (biochemistry, haematology, microbiology) do you have experience in?
Why they ask: Measures your specialism and fit for the role.
How to approach: Clearly state the departments you have worked in and the analysers/tests you know.
2. How do you assess sample quality and manage a sample that should be rejected?
Why they ask: Measures quality awareness and command of the pre-analytical stage.
How to approach: Explain rejection criteria such as haemolysis, lipaemia or under-filling, and the process.
3. What do you do when an analyser gives a calibration or out-of-control result?
Why they ask: Assesses quality assurance procedures.
How to approach: Walk through stop work → repeat control → recalibrate → verify results.
4. How do you follow biosafety rules in daily practice?
Why they ask: Measures your safety awareness and habits.
How to approach: Cover sharps/waste management, PPE and spillage procedures with concrete examples.
5. How do you balance speed and accuracy on urgent tests (troponin, blood gas)?
Why they ask: Shows how you perform under pressure and prioritise.
How to approach: Explain how you gain speed without cutting the pre-checks.
6. What is your experience with a LIMS (Laboratory Information Management System)?
Why they ask: Assesses your competence with digital tools.
How to approach: Name the systems you have used and the data entry/result reporting flow.
How to Answer — The STAR Method
Use the STAR structure to answer behavioural questions with a strong story:
- Situation: What was the context?
- Task: What was your responsibility?
- Action: What did you do?
- Result: What outcome/impact followed? (with numbers if possible)
What to Highlight in the Interview
- ✓State clearly which lab sector you worked in (food, pharma, chemical, clinical).
- ✓List the analytical methods you apply (HPLC, GC, PCR, titration) explicitly.
- ✓Always highlight your GLP/GMP and ISO 17025 experience — contribution to accreditation matters.
- ✓List the instruments you use and any calibration experience.
What to Avoid
- ✕Not stating your analytical methods — "worked in a lab" is not enough.
- ✕Leaving out GLP/GMP or ISO accreditation experience.
- ✕Being vague about which lab sector you specialise in.
Frequently Asked Questions
How should I prepare for an interview?
Study likely questions in advance, prepare a concrete example from your own experience for each (using STAR) and rehearse out loud.
How much should I talk in my answers?
Ideally 60–90 seconds per question. Too short seems disengaged; too long seems unfocused.
What if I get a question I do not know?
Be honest; say you do not know, but add how you would learn it or a similar experience. Making things up is the biggest mistake.
Get answers tailored to YOU
CVLayer Interview Prep reads your CV and the job post and generates likely questions and ready answers specific to the Laboratory Technician role.
Start Interview Prep →Before the interview: get your CV right.