Quest Diagnostics reviews

3.2

50% would recommend to a friend

(5,672 total reviews)

Jim Davis

57% approve of CEO

48% positive business outlook

Quest Diagnostics has an employee rating of 3.2 out of 5 stars, based on 5,672 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 Salud industry (3.4 stars).

Reviews by job title

6K reviews
2.0
Sep 14, 2025

Cut-throat

Recommend
CEO approval
Business Outlook

Pros

A new lab so there is the opportunity to guide development and gain valuable experience/training from very nice instrument company representatives. None of the usual STAT/ER friction with hospitals. LOTS OF UNAVOIDABLE DOWNTIME.

Cons

I completed all of the tasks that were assigned to me. Much of the lab was/is being installed and validated. The culture felt very corporate/cut-throat and people rarely accepted responsibility for their role in issues in order to look good to higher-ups. A daily game of trumpet your achievements while sabotaging others. Management/IT doesn't seem really interested in this lab....interpersonal issues and tech problems aren't professionally addressed. It's very hard to get an email response from anyone. A man-child coworker is a huge mess to deal with even though he's "senior". I don't recommend working here unless this is usually an easy job for you and you can cover yourself against coworkers with selfish intentions. Came with the territory as a former travel contract MLS. The current crop of coworkers are kinda weak...with a 1-2 FTE workload (10-20 samples/day) for 5-6 staff there was still constant complaining and backstabbing. The building had/has a rat problem and smelled like a bankrupt pet store. There were rats audibly chewing holes in the ceiling, having babies, and dying. It smelled terrible. A supervisor never reported I concern I had to HR and believed the perpetrator over me.

3.0
Sep 13, 2025
Recommend
CEO approval
Business Outlook

Pros

Clean, fun place to work

Cons

Overworked with the amount of people coming in. Management lies to you constantly to keep you coming, will not advance you but give you the work of a supervisor

3.0
Sep 10, 2025
Recommend
CEO approval
Business Outlook

Pros

They'll train you in the lab in any area you're interested in.

Cons

As a lab assistant, they do not care about you or making your job harder if it makes the life for the techs a lot easier. People will report you for any little thing you do. You can breathe too loud and someone will report you.Pay is not at market rate.

Viewing 136 - 138 of 5,672 Reviews

Glassdoor has 6,063 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.