The world's leader in diagnostic laboratory testing, information, and services. This includes blood tests, healthcare screening tests, gene-based testing and tests performed during patient treatment.
Quest Diagnostics (questdiagnostics.com) has 1,745 customer reviews on Five Star Index, with an average rating of 1.7 out of 5.
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James
It has been 12 days since my blood was drawn and they have just told me they are over loaded and it will be another 4days before the results are in. My wife had her blood drawn the same day and had her results in about 5 days.
Mark M.
Unable to drop off a 2L container of 24 hour urine collection. Person told me to make an appointment rather than taking the container from me. Unbelievable.
Louis G.
Quest has got pathetic. They build these facilities. They don’t have a human in the lobby. You make an appointment for you get there. You still have to wait you get there. The bathroom is broken. They tell you to take the rest of your lab work too. Any facility wish they fail to tell you when you get to the other facility now you have to wait just like you didn’t have an appointment. This company is pathetic. I’m gonna talk to my insurance company and see what other lab companies have a preferred on our list. I will be changing labs. I’ve been using quest for years. Beware of this company.
Felipe D.
Today Thursday 01/29/26 I had a appointment with Quest in Brookshire Downey, at first they stated I did not a have a appointment then finally I should them my e-mail stating my appointment at 10:30am. Then she stated that I cannot get the blood test my Doctor requested for my yearly physical because Medicare, and secondary insurance Health Net does not cover my blood test. I get it every year, and they stated is not covered. I also get seizures, and get routines blood count checks, and she it also said it does not cover routine check. Something I always get done with Quest. I called my Doctor, and stated my insurance is still active. She asked me what kind of Quest did I go. I reply one employee that had attitude with no customer service. She did not want to work. I even told I will sign a responsibility form for, payments she had me sign but still did not want to do the my blood test.
Lorigay
Had services done 9/17/25, bill paid 12/9/25. Went to gave blood work done 1/5/26 was told bill open, cannot be seen. Sent proof of payment same day as per customer service. On 1/7/26 received email asking for copy of bank statement. This was sent via fax and snail maol 1/8/26. Called 1/29 to f/u and was told there are notes in system regarding phone call, and payment from June 2025 was applied to Sept 2025 bill and then moved - huh? How can payment be applied to a service date that hasnt occurred yet??? Quest is endangering my life by not being able to get blood work that has been requested by my doctor. We, the people, should hold this greedy company responsible and file a class action based only on denial of services. If I had some place else to go, I would never use Quest again
Richard B.
Painful blood draw by extremely curt, unfriendly phlebotomist. To add insult to injury, my post-draw bandage was improperly and unprofessionally applied, as noted in the attached photograph.
bahareh H.
I did my lab test about week ago, i had appointment with provider, the provider didn't receive the result, I spend too much time.
Third L.
It is now 35 minutes past appointment time and still waiting. TV is broadcasting the same info over and over again in full waiting area. Will NEVER RETURN. Terrible experience.
