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Laboratory Technician interview questions (2026)
Laboratory Technician interviews in the UK are assessed on practical lab skills, accuracy & attention to detail, health & safety, usually across 2 stages — phone or video screen, then technical interview or test. The 12 questions below are the ones actually asked, each with what a strong answer does.
Researched, current questions asked in real laboratory technician interviews in the UK (Science & Pharma), with what a strong answer actually does. Questions marked 2026 are the newer, AI-era questions employers now ask. Last reviewed 2026-07-22.
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What they assess
- Practical lab skills
- Accuracy & attention to detail
- Health & safety
- Organisation & throughput
- Supporting the lab team
How a laboratory technician interview usually runs
- Phone or video screen
- Technical interview or test
The questions to expect
Which techniques and equipment can you run confidently — and how do you check a piece of kit is fit for use before you start?
List honestly (pipetting, pH, balances, centrifuges, spectrophotometry…), then the checks: calibration status, cleanliness, logbook. Never oversell — they may test you.
Talk us through preparing a solution or dilution accurately — say, a 1-in-100 dilution of a stock.
Calculation out loud, right glassware and pipette, labelling with contents/date/initials, and recording it. Some interviews include a quick maths check — practise.
An instrument fails midway through a batch of samples. What do you do?
Secure the samples first, log the fault, tell the lab manager, quarantine affected results and don't improvise repairs. Sample integrity is the priority.
Tell us about a time your attention to detail caught an error before it caused a problem.
A mislabelled tube, a transposed figure, an odd control value — small catch, real consequence avoided. This story is the core of the job; have it ready.
How do you manage sample tracking, stock control and record-keeping — have you used a LIMS?
Name any system you've used, or describe your manual discipline: barcode/logbook habits, stock rotation, reorder points. Traceability is the word to use.
What does COSHH mean for your daily work, and how do you handle a chemical spill?
Assessments before use, PPE, datasheets, spill kit procedure and reporting. Show safety as habit — where you'd look, who you'd tell.
Several scientists need your support at once and everything is 'urgent'. How do you prioritise?
Ask about real deadlines, sequence by impact, communicate what you can and can't do by when. Service with a spine — labs run on technicians who manage this.
Why laboratory work — and where would you like your technical career to go?
The hands-on appeal plus a growth line: registered scientist route, specialist techniques, an HNC/degree part-time. Employers invest in technicians with direction.
Labs are adding automation — liquid handlers, robotic sample prep. How do you feel about working alongside it?2026
Automation shifts your value to setup, QC and exceptions — say you want to run and maintain the robots, not compete with them.
What does good documentation look like in a lab or trial — and why does it matter so much?
ALCOA in your own words: attributable, legible, contemporaneous, original, accurate. Then the habit — recording in real time, never backfilling.
Tell us about a time your results didn't match what you expected. What did you do?
The scientific reflex: check the method and instrument before doubting the sample, repeat with controls, report honestly. Unexpected results aren't failures.
What do you do if an SOP seems wrong, outdated or impossible to follow as written?
Never silently deviate: flag it through the change/deviation process, follow the current version meanwhile unless it's unsafe. Compliance plus initiative.
How to prepare for a laboratory technician interview in the UK
Interviews often include a lab tour and practical or numeracy check alongside competency questions — revise dilution calculations and unit conversions. Emphasise accuracy, COSHH awareness and any LIMS experience; for NHS or pharma labs, mention GLP/GMP awareness even at technician level.
How Science & Pharma interviews are run in 2026
- Lab and scientist roles combine a competency panel with a technical round — often a lab tour, a practical task or presenting your own work; regulated (GMP/GCP) roles probe data integrity hard.
- Pharma and CRO interviews are scenario-based: expect 'what would you do if a result was out of specification / a site deviated from protocol' rather than definition recall.
- First rounds are commonly video calls; NHS lab roles (biomedical science) follow structured values-based panels with HCPC registration checks.
Turn this into a plan
A list of questions is a start; a programme is what changes the outcome. Intervooh builds a day-by-day plan for your exact laboratory technician interview — company research, story building with an AI coach, spoken practice with delivery feedback, and scored mock interviews. It never writes your answers for you.
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