Medical Lab Technologist
Interview Questions.
15 practice questions across 12 skills — each with what the interviewer is really listening for. Prepare with intent, not guesswork.
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How to use this page
Don't memorise answers. For each question, read what the interviewer is looking for, then practise answering out loud in your own words with a real example. The notes describe strong answers and common red flags — they are for your prep, not a script.
Sample Collection
1 questionWalk me through how you ensure a sample is collected and labelled correctly.
IntermediateWhat the interviewer is looking for: Strong answers verify patient identity, use the correct tube and technique, and label at the bedside to avoid mix-ups. Any shortcut on patient ID or labelling is a serious patient-safety red flag.
Quality Control
2 questionsHow do you make sure a test result is reliable before it is released?
AdvancedWhat the interviewer is looking for: Look for running QC, checking it is within range, and not releasing results if QC fails. Releasing results with failed or skipped QC is a serious red flag.
You realise you may have made an error in a released result. What do you do?
IntermediateWhat the interviewer is looking for: Look for immediately reporting it, correcting it, notifying clinicians, and following incident procedure. Hiding an error is the biggest possible red flag.
Laboratory Testing
1 questionA result comes back critically abnormal. What do you do?
AdvancedWhat the interviewer is looking for: Strong candidates verify the result, check for errors, and follow critical-value notification protocol promptly. Sitting on a critical value is a serious red flag.
Calibration
1 questionHow do you handle calibration and maintenance of lab instruments?
IntermediateWhat the interviewer is looking for: Look for following schedules, verifying calibration, and documenting, knowing results depend on it. Skipping calibration or ignoring drift is a red flag.
Specimen Processing
1 questionHow do you process and prioritise specimens when several arrive at once, including STAT samples?
IntermediateWhat the interviewer is looking for: Strong answers prioritise STAT and time-sensitive samples, maintain integrity, and stay organised. Processing in random order and delaying urgent samples is a red flag.
Hematology
1 questionHow do you approach a hematology result that does not fit the clinical picture?
AdvancedWhat the interviewer is looking for: Look for verifying, checking for interference or sample issues, and reviewing a smear where relevant before reporting. Reporting a questionable result without checking is a red flag.
Microbiology
1 questionWhat controls do you follow in microbiology to avoid contamination and false results?
IntermediateWhat the interviewer is looking for: Strong candidates use aseptic technique, proper media and controls, and correct incubation. Sloppy technique that risks contamination is a serious red flag.
Biochemistry
1 questionHow do you troubleshoot an unexpected biochemistry analyzer result?
AdvancedWhat the interviewer is looking for: Look for checking QC, sample quality, interference, and instrument status methodically before reporting. Reporting without troubleshooting is a red flag.
Attention to Detail
1 questionWhy is attention to detail so critical in the lab?
BasicWhat the interviewer is looking for: Strong answers know a mislabelled sample or transcription error can harm a patient, and use systematic checks. Carelessness is a serious red flag.
Lab Information Systems
1 questionHow do you use the lab information system to manage samples and results accurately?
BasicWhat the interviewer is looking for: Look for accurate order entry, result verification, and traceability. Bypassing the system or careless data entry is a red flag.
Infection Control
1 questionHow do you protect yourself and others through infection control in the lab?
BasicWhat the interviewer is looking for: Strong candidates follow standard precautions, handle biohazards correctly, and dispose safely. A casual attitude to biosafety is a serious red flag.
Communication
1 questionHow do you communicate a problem with a sample to the clinical team?
BasicWhat the interviewer is looking for: Strong answers clearly explain the issue (e.g. haemolysis, insufficient sample) and what is needed, professionally. Silently reporting a compromised result is a red flag.
Behavioural & role-general
2 questionsHow do you stay accurate and safe during a high-volume shift?
BasicWhat the interviewer is looking for: Look for systematic process and refusing to skip QC or checks under pressure. Cutting corners for speed is a serious red flag in the lab.
Why did you choose lab science, and how do you keep your knowledge current?
BasicWhat the interviewer is looking for: Strong answers show genuine interest and ongoing learning about methods and safety. No habit of keeping current is a concern.