Quest Diagnostics reviews

3.2

48% would recommend to a friend

(5,688 total reviews)

Jim Davis

56% approve of CEO

47% positive business outlook

Quest Diagnostics has an employee rating of 3.2 out of 5 stars, based on 5,688 company reviews on Glassdoor which indicates that most employees have a good working experience there. The Quest Diagnostics employee rating is in line with the average (within 1 standard deviation) for employers within the Healthcare industry (3.5 stars).

Reviews by job title

6K reviews
4.0
Nov 17, 2025
Recommend
CEO approval
Business Outlook

Pros

Stable, reliable structured environment, job security assured so as long as you stay within operational parameters.

Cons

Moving up in career ladder should not always be be based on employee applying. There should be actual promotions instead of applying for it.

5.0
Sep 23, 2025

Good company!

Recommend
CEO approval
Business Outlook

Pros

I have worked at Quest Diagnostics for over 2 years and it has been a good experience. The work culture is friendly and people help each other a lot. Appraisals are fair and based on how well you perform. The job is stable, and I feel secure working here. Management is supportive and listens to employees. There are chances to grow and learn new things. Overall, it's a good place to work with steady growth opportunities.

Cons

Some processes take time to improve, providing chances for employees to contribute ideas and make a difference.

Viewing 5476 - 5478 of 5,688 Reviews

Glassdoor has 6,079 Quest Diagnostics reviews submitted anonymously by Quest Diagnostics employees. Read employee reviews and ratings on Glassdoor to decide if Quest Diagnostics is right for you.