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 Healthcare industry (3.5 stars).

Reviews by job title

6K reviews
1.0
Dec 4, 2025

horrible

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

decent pay, okay benefits I guess

Cons

everything else. horrible supervisors. my leads were okay.

1.0
Dec 1, 2025
Recommend
CEO approval
Business Outlook

Pros

You get a paycheck there

Cons

They play on favorites I was there 8 years a person who called and quit without notice came back was promoted to team lead and total only 1.5 tears while they gifted me with a slap in the face with full time advanced rsr and use me like a piece of gum on their shoe, no respect.

3.0
Nov 24, 2025

Busy

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

Good staff, enjoyed working with them

Cons

Management can be difficult, busy

Viewing 82 - 84 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.