Quest Diagnostics

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50 Bellefontaine St Ste 101
Pasadena, CA 91105
The Quest Diagnostics difference. Bringing together quality, speed, and technology to power advanced, affordable diagnostics for all. No trade-offs required.
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2.5214 reviews
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May A.
8/20/2025

This is one of the first times I am leaving a 5 star for this location! I had the pleasure of being cared for by Lucy, my phlebotomist this morning. Whatever momentary, slight discomfort there...

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Brenna
8/22/2025

This is not directed towards Quest as a whole, I generally have a good experience. However, this comment is about the staff at 50 Bellefontaine St Pasadena, CA..don't go to this one The staff was...

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Jozlyn H.
7/30/2025

I'm honestly surprised by the negative reviews because my experience at this location has been great! The staff is super nice and helpful. This was my second visit, and just like the first time,...

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Jeff J.
8/22/2025

Went in for a routine blood draw w appointment and ended up waiting over 45min. The room was packed w angry people. Worse is the attitude of technician, when asked for the reason for the long...

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Sylvia A.
7/24/2025

I am writing this negative review not because I think Quest Diagnostic does a poor job with blood work It's there scheduling that is NO GOOD !! I've been to this location 2 times in the past month...

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