Quest Diagnostics

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10399 Lemon Ave Ste 104
Rancho Cucamonga, CA 91737
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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3.0126 reviews
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Danielle P.
5/5/2025

New insurance brought me to this lab today. I was able to create an account online and make an appointment easily. I feel like they had way more availability for appointments than the previous lab...

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Jeanette P.
9/30/2024

My first time here. A little hard to find as there's no obvious sign, but head to the western side lot, and walk through the side door. The lab is the final door on the right. Inside, it's clean...

Emily R.
8/29/2025

If you try to come to your appointment early they will let you check in and your name will appear on the large waiting room screen which makes you think you are on a waitlist. Don't be fooled by...

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C G.
2/3/2025

I had a very good experience here! I made an appointment for 6:20am before work and conveniently checked in 10 minutes beforehand on the link sent to my phone via text. Carrie drew my blood and...

Larry C.
7/7/2025

Need an appointment. Offer waitlist, but patients are waiting more than 2 1/2 hours! Many leaving upset, yelling at staff. One patient said she was diabetic but staff seemed unconcerned! I...

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