Laboratory Technician Interview Questions That Actually Predict Performance
Good technician interviews test what the person has actually done at the bench and how they think when something goes wrong. Generic questions produce generic answers; method-specific and scenario questions reveal real capability. This guide serves both interviewers building a question set and candidates preparing honest answers.
Method and instrument experience
- Walk me through the last method you ran end to end — what did you prepare, what did the instrument do, and what did you check before reporting?
- Which instruments have you personally operated, maintained or troubleshot? What went wrong most often?
- Describe a time a calibration or system suitability check failed. What did you do next?
- What is the most complex sample preparation you have performed, and what made it difficult?
Quality and data-integrity scenarios
- A result is out of specification but the batch is needed urgently. What do you do?
- You notice a colleague's recorded time does not match when the instrument actually ran. How do you handle it?
- How do you document a deviation or an aborted run?
- What does 'attributable' mean in data recording, and why does it matter?
Safety and judgment
- Describe a safety near-miss you were involved in and what changed afterward
- How do you approach a new method or a new hazard you have not worked with before?
- What would make you stop work and escalate rather than continue?
For interviewers: how to use these
- Adapt every question to the actual methods and instruments in your posting — specificity is the point
- Ask for real examples, then probe: what exactly did you do, what did you check, what would you do differently
- Include a practical element where lawful and feasible: reading a chromatogram, spotting a documentation error, or walking through a checklist
- Score against job-relevant criteria decided before interviews begin, and keep the process consistent across candidates
For candidates: how to prepare
- Map your bench history to the posting's methods and instruments before the interview
- Prepare two or three concrete problem stories: what happened, what you checked, what you decided, what you learned
- Be precise about what you did yourself versus what a team did — interviewers probe this
- Never claim method or instrument experience you do not have; laboratories verify competency quickly on the job