Top 10 Lab Assistant Interview Questions and Answers [Updated 2024]

Sample Answer
In my previous role as a Lab Assistant at XYZ University, I was given the task of preparing samples for a complex experiment that required following a detailed protocol. The protocol had specific steps to be followed in a particular order, with precise measurements and timing. Despite the complexity, I managed to successfully prepare all the samples on time and without any errors. This contributed to the success of the experiment and earned me praise from the lead researcher.

Sample Answer
If I were asked to perform a test that I was unfamiliar with, I would first ask for detailed instructions. I would also consult any available resources or manuals to understand the procedure better. If I still had doubts, I would seek assistance from a senior colleague or supervisor. I believe it’s better to ask questions and ensure the task is done correctly than to assume and potentially make mistakes. In my previous position, I was often tasked with new procedures, and this approach always helped me to learn quickly and perform the task efficiently.

Sample Answer
During my previous role, I was conducting a series of chemical reactions for a research project. However, the results kept deviating from the expected outcomes. I started troubleshooting by reviewing the procedure and cross-checking the reagents. It turned out that one of the reagents was not of the required purity level. I replaced it with a higher-grade reagent, which solved the issue. This experience taught me the importance of not taking anything for granted in lab work and always double-checking every detail.

Sample Answer
Safety and accuracy are paramount in a lab setting. I always start by familiarizing myself with the lab’s safety protocols and ensuring I have the necessary personal protective equipment. I double-check all lab equipment before starting any experiment and follow the procedures to the letter, documenting each step to ensure accuracy. For instance, in my previous role, I implemented a protocol for double-checking measurements and readings, which significantly reduced errors.

Sample Answer
During my internship at XYZ lab, there was an instance when I was asked to prepare samples for an urgent project, at the same time I was also supposed to complete the routine lab maintenance tasks. I prioritized the sample preparation as the results were critical for the ongoing research. I stayed late to complete the maintenance tasks after preparing the samples. The samples were ready in time for the project and the lab was also clean and organized for the next day.

Sample Answer
While I was working in my previous lab, we had an open day where the public could come and see our work. I had to explain the process and importance of DNA extraction to a group of high school students. To make it understandable, I used a metaphor of fishing, where the DNA is the fish and the extraction process is the fishing process, each step with its corresponding fishing activity. The students seemed to understand the concept and even asked further questions about it. I believe that being able to communicate scientific information in a simple and accessible way is essential for a lab assistant.

Sample Answer
Accuracy and precision are critical in any lab work. To ensure this, I always double-check my measurements and use calibrated instruments. I have made it a habit to record data immediately after taking measurements to avoid any potential errors. I also ensure that my workspace is clean and well-organized, as this reduces the chance of making mistakes. Additionally, I have undergone training on how to ensure accuracy and precision in lab work, which has equipped me with the necessary skills and knowledge.

Sample Answer
During my previous role, there was a team member who often missed deadlines, which impacted our overall lab schedule. I approached the individual privately and discussed the issue in a non-confrontational manner. I found out that they were struggling with some personal issues. We agreed on a temporary adjusted schedule which would allow them to fulfill their duties without adding undue stress. I also offered my assistance if needed. This resulted in an improved working relationship and the individual was able to catch up with their work.

Sample Answer
If I discovered a discrepancy in my lab results, I would first stay calm and not panic. I would then carefully recheck my work, including the procedures I followed, the equipment I used, and the data I recorded. If I couldn’t find any errors in these areas, I would compare my results with any control experiments. If the discrepancy still persisted, I would seek advice from my supervisor or colleagues. It’s important to address these issues promptly to ensure the accuracy and reliability of lab results.

Sample Answer
I usually start each day by reviewing my tasks and prioritize them based on their urgency and importance. I use a combination of digital tools and traditional methods for organization. For instance, I use project management software to track progress on long-term projects and a physical planner for daily tasks and deadlines. Additionally, I always allocate some time each day for unexpected tasks or issues that might arise. During a busy day, I focus on one task at a time to ensure accuracy and minimize errors.