quest diagnostics Recruitment Process, Interview Questions & Answers

Quest Diagnostics typically uses a structured hiring process with phone screening, technical assessments focused on lab operations or IT systems, and panel interviews evaluating both technical proficiency and regulatory compliance awareness.
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About quest diagnostics

quest diagnostics Interview Questions and Answers

Updated 21 Feb 2026

Sales Representative Interview Experience

Candidate: Jessica M.

Experience Level: Entry Level

Applied Via: Job fair

Difficulty: Easy

Final Result:

Interview Process

1

Questions Asked

  • Why do you want to work in medical sales?
  • How do you handle rejection?
  • Describe a time you met a sales target.

Advice

Show enthusiasm for healthcare and strong communication skills.

Full Experience

I met the recruiter at a job fair and had an on-the-spot interview. They looked for motivation and interpersonal skills more than technical knowledge.

Software Engineer Interview Experience

Candidate: David K.

Experience Level: Mid Level

Applied Via: Recruiter outreach

Difficulty: Hard

Final Result:

Interview Process

4

Questions Asked

  • Implement a function to reverse a linked list.
  • Explain RESTful API design.
  • Describe your experience with cloud platforms.
  • How do you handle debugging complex issues?
  • Behavioral: Tell me about a time you worked in a team under tight deadlines.

Advice

Practice coding problems and be ready for behavioral questions.

Full Experience

The process included a phone screen, a coding challenge, a technical interview, and a final HR round. The coding questions were tough but fair, and teamwork skills were highly valued.

Medical Technologist Interview Experience

Candidate: Sara L.

Experience Level: Senior Level

Applied Via: LinkedIn job posting

Difficulty:

Final Result:

Interview Process

2

Questions Asked

  • What certifications do you hold relevant to medical technology?
  • How do you ensure compliance with safety standards?
  • Describe your experience with automated analyzers.

Advice

Highlight certifications and compliance experience; be ready to discuss specific equipment.

Full Experience

The interviews were professional and focused on my technical expertise and leadership in the lab. They appreciated my knowledge of regulatory standards and equipment maintenance.

Data Analyst Interview Experience

Candidate: Michael T.

Experience Level: Mid Level

Applied Via: Referral from a current employee

Difficulty:

Final Result: Rejected

Interview Process

3

Questions Asked

  • How do you clean and validate large datasets?
  • Describe a project where your analysis impacted business decisions.
  • What tools do you use for data visualization?
  • Explain a time you had to communicate complex data to non-technical stakeholders.

Advice

Brush up on SQL and data visualization tools; prepare to explain your projects clearly.

Full Experience

The process started with a phone interview, followed by a technical test and a final panel interview. The technical test was quite detailed, and I realized I needed stronger skills in some tools they use.

Laboratory Technician Interview Experience

Candidate: Emily R.

Experience Level: Entry Level

Applied Via: Online application via company website

Difficulty:

Final Result:

Interview Process

2

Questions Asked

  • Describe your experience with PCR testing.
  • How do you handle high-pressure situations in the lab?
  • Explain a time you identified an error in lab results.

Advice

Be prepared to discuss technical lab procedures and emphasize attention to detail.

Full Experience

The first round was a phone screening focusing on my background and motivation. The second round was an in-person technical interview with practical questions about lab processes. They valued my hands-on experience and problem-solving skills.

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Frequently Asked Questions in quest diagnostics

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Common Interview Questions in quest diagnostics

Q: A man has a wolf, a goat, and a cabbage. He must cross a river with the two animals and the cabbage. There is a small rowing-boat, in which he can take only one thing with him at a time. If, however, the wolf and the goat are left alone, the wolf will eat the goat. If the goat and the cabbage are left alone, the goat will eat the cabbage. How can the man get across the river with the two animals and the cabbage?

Q: A hare and a tortoise have a race along a circle of 100 yards diameter. The tortoise goes in one directionand the hare in the other. The hare starts after the tortoise has covered 1/5 of its distance and that too leisurely.The hare and tortoise meet when the hare has covered only 1/8 of the distance. By what factor should the hareincrease its speed so as to tie the race?

Q: A rich merchant had collected many gold coins. He did not want anybody to know about them. One day his wife asked, "How many gold coins do we have?" After pausing a moment, he replied, "Well! If I divide the coins into two unequal numbers, then 32 times the difference between the two numbers equals the difference between the squares of the two numbers."The wife looked puzzled. Can you help the merchant's wife by finding out how many gold coins they have?

Q: A rich man died. In his will, he has divided his gold coins among his 5 sons, 5 daughters and a manager. According to his will: First give one coin to manager. 1/5th of the remaining to the elder son.Now give one coin to the manager and 1/5th of the remaining to second son and so on..... After giving coins to 5th son, divided the remaining coins among five daughters equally.All should get full coins. Find the minimum number of coins he has?

Q: There are 3 clans in an island - The Arcs who never lie, the Dons who always lie and the Slons who lie alternately with the truth. Once a tourist meets 2 guides who stress that the other is a Slon. They proceed on a tour and see a sports meet. The first guide says that the prizes have been won in the order Don, Arc, Slon. The other says that, the order is Slon, Don, Arc. (the order need not be exact). To which clan did each of the guides and the players belong? ...

Q: 36 people {a1, a2, ..., a36} meet and shake hands in a circular fashion. In other words, there are totally 36 handshakes involving the pairs, {a1, a2}, {a2, a3}, ..., {a35, a36}, {a36, a1}. Then size of the smallest set of people such that the res...

Q: T, U, V are 3 friends digging groups in fields. If T & U can complete i groove in 4 days &, U & V can complete 1 groove in 3 days & V & T can complete in 2 days. Find how many days each takes to complete 1 groove individually.

Q: The citizens of planet nigiet are 8 fingered and have thus developed their decimal system in base 8. A certain street in nigiet contains 1000 (in base 8) buildings numbered 1 to 1000. How many 3s are used in numbering these buildings?

Q: At 6?o a clock ticks 6 times.The time between first and last ticks is 30 seconds.How long does it tick at 12?o clock?2.A hotel has 10 storey. Which floor is above the floor below the floor, below the floor above the floor, below the floor above the fifth.

Q: The egg vendor calls on his first customer and sells half his eggs and half an egg. To the second customer, he sells half of what he had left and half an egg and to the third customer he sells half of what he had then left and half an egg. By the way he did not break any eggs. In the end three eggs were remaining . How many total eggs he was having ?

Q: Tom has three boxes with fruits in his barn: one box with apples, one box with pears, and one box with both apples and pears. The boxes have labels that describe the contents, but none of these labels is on the right box. How can Tom, by taking only one p

Q: A vessel is full of liquid. From the vessel, 1/3rd of the liquid evaporates on the first day. On the second day 3/4th of the remaining liquid evaporates. What fraction of the volume is present at the end of the second day

Q: There are 7 letters A,B,C,D,E,F,GAll are assigned some numbers from 1,2 to 7.B is in the middle if arranged as per the numbers.A is greater than G same as F is less than C.G comes earlier than E.Which is the fourth letter

Q: Jarius and Kylar are playing the game. If Jarius wins, then he wins twice as many games as Kylar. If Jarius loses, then Kylar wins as the same number of games that Jarius wins. How many do Jarius and Kylar play before this match?

Q: In a Park, N persons stand on the circumference of a circle at distinct points. Each possible pair of persons, not standing next to each other, sings a two-minute song ? one pair immediately after the other. If the total time taken for singing is 28 minutes, what is N?

Q: Raj has a jewel chest containing Rings, Pins and Ear-rings. The chest contains 26 pieces. Raj has 2 and 1/2 times as many rings as pins, and the number of pairs of earrings is 4 less than the number of rings. How many earrings does Raj have?...

Q: If I walk with 30 miles/hr i reach 1 hour before and if i walk with 20 miles/hr i reach 1 hour late. Find the distance between 2 points and the exact time of reaching destination is 11 am then find the speed with which it walks.

Q: There are four dogs/ants/people at four corners of a square of unit distance. At the same instant all of them start running with unit speed towards the person on their clockwise direction and will always run towards that target. How long does it take for them to meet and where?

Q: Given a collection of points P in the plane , a 1-set is a point in P that can be separated from the rest by a line, .i.e the point lies on one side of the line while the others lie on the other side. The number of 1-sets of P is denoted by n1(P)....

Q: Consider a series in which 8 teams are participating. each team plays twice with all other teams. 4 of them will go to the semi final. How many matches should a team win, so that it will ensure that it will go to semi finals.?