Cancel

    Open app

    Search

    Quest Diagnostics

    2.4 (54 reviews)
    Closed 7:00 am - 12:00 pm

    Quest Diagnostics Photos

    You might also consider

    Recommended Reviews - Quest Diagnostics

    Your trust is our priority, so businesses can't pay to alter or remove their reviews. Learn more about reviews.
    Yelp app icon
    Browse more easily on the app
    Review Feed Illustration

    Reviews With Photos

    Blue S.

    I have a really bad experience with this Quest location at Diamond bar. First of all, it's a difficult to find the room. I looked up on Gps it showed the building 750. I walked in and had a hard time to figure the room. It should have a sign up in the front or something noticeable. The nurse who did my blood test is pretty rude!! I was kinda nervous to get my blood test. Then she asked me to close my hand but I did it slow then she wanted me to do due to my nervousness. Then she yelled at me "my goodness jess" in my FACE!! This is so rude. Suddenly she poked a half big needle which it's not a butterfly needle in to my arm with a hard pressure and caused me a bruise in my arm!! I did probably around 3 tubes when the tube filled it needed to change to another and every time she changed the tube she pressed a pressure in it. The thing I learned from this experience is I will never go back to this Quest location again. They did pretty terrible job. And also next time I will ask for a butterfly needle. I would give a zero star if I could. I took a blood test almost a week ago. The picture is my arm today but it was more darker couple day ago. I wish it will be gone soon.

    See all

    6 years ago

    Business owner information

    Photo of Quest Support

    Quest Support

    Thank you for sharing this feedback, Candy!

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    16 years ago

    Helpful 6
    Thanks 0
    Love this 0
    Oh no 0

    7 years ago

    Super slow, one employee for everything!!....more than two hours waiting for a blood test!

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    12 years ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    14 years ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    11 years ago

    Helpful 1
    Thanks 0
    Love this 1
    Oh no 0

    11 years ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0
    Photo of Greg B.
    72
    15
    1

    14 years ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    9 years ago

    Under staff and slooooow. only two people working. This is the worst one I've been to.

    Helpful 2
    Thanks 0
    Love this 0
    Oh no 0

    10 years ago

    Helpful 2
    Thanks 0
    Love this 0
    Oh no 0

    12 years ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    15 years ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    11 years ago

    Helpful 0
    Thanks 0
    Love this 1
    Oh no 0

    14 years ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    Page 2 of 2

    Ask the Community - Quest Diagnostics

    Review Highlights - Quest Diagnostics

    Procedure (blood drawn): Quickest and for once I didn't feel like I was going to pass out afterwards.

    Mentioned in 4 reviews

    Read more highlights

    You might also consider

    Sun Clinical Laboratories

    Sun Clinical Laboratories

    1.9(34 reviews)
    2.1 mi

    Our family have been coming to this place for blood work for many years. The previous experience…read morewas okay but lately we had very horrible experience with the front desk lady. She probably really hated this job because she was so rude so impolite and when she talks to you she sounded like you are stupid or low life. This is very unpleasant. We are here to do blood work and bringing revenue to your company so you can keep your job but you act like we are begging you to do blood work for us this is insane. I ended up calling the corporate office and file a complaint which I doubt they would do anything but I'm doing what I could so that others don't have to experience the same thing that my family had to go through.

    I'd give this spot 0 stars if I could. They might be great people but perhaps just horrible and…read moretheir chosen professions? Their skills, or lack thereof, definitely need to be improved. They were unable to successfully draw blood from my mother after two initial attempts. The third attempt was finally successful but after 1.5 vials, the tech stated that they needed to try the other hand again to see if it would be faster. 2 more unsuccessful attempts on the other hand and they ask my mom if she'd like to come back tomorrow, when their coworker is working instead (mind you this is after already telling her to fast for today's blood drawing). She ended up leaving and going to a different lab. Absolutely amazed that this place is still open. Someone needs to look into it.

    Photos
    Sun Clinical Laboratories
    Sun Clinical Laboratories
    Sun Clinical Laboratories

    See all

    Quest Diagnostics - Kiosk Check-in no personnel service

    Quest Diagnostics

    2.9(149 reviews)
    5.7 mi

    My wife came in today for scheduled bloodwork for my son. He had an appointment for 3:30 PM, and…read moreupon arrival, they checked in and were put in queue as it showed on the screen in the lobby. Given a Friday afternoon, it was crowded, but saw my son's name on the list confirmed they would be seen in order. As they waited, a lady came in and got the attention from the staff, and asked for a walk in, claiming she had an appointment. She didn't but they somehow gave her a spot. As my wife waited, seemingly longer, they noticed that my son's name was no longer on the monitor queue. Other customers were being called in, including some that arrived after them. My wife finally got a staff member's attention and told her the situation. The "rude" female insisted that they had no control over what the screen showed. (Odd that you can literally put people on the walk in queue but have no say with actual scheduled customers, BS). Long story short, they ended having to wait until all customers were seen, including walk appointments. After, pleading with the staff member that we were scheduled, they did nothing to help and made us wait until closing. Again, scheduled appointments are confirmed via text and email if you have been here. But no attempt to fix the situation. The worst experience ever at Quest (given we've been here several times and haven't had an issue). The horrible, staff member who would not help, and to top it off, she kept telling customers how busy they were because they were short staffed. That is no excuse when assisting customers. Second, saying that they had no control over the queue when they were clearly able to take walk ins, but mysteriously removed my son from the list. We've been to this location before, but it seems that horrible employees lower the standard of customer service and the overall business. Even worse is that so many people rely on Quest because many private doctor's offices do not handle internal bloodwork; so Quest has this massive contract with nationwide offices to do bloodwork for them. The customers who rely on Quest are our family members, whether sick, elderly, some dealing with major medical issues, yet they might come here and have to deal with the BS that my family dealt with today. Just horrible. Hoping to figure out if there is actual management or staff supervision to bring this issue to.

    Nicer, cleaner, and more spacious than Lab Corp. Easy parking. Easy check in. Short wait times…read more Procedure was quick and painless. Staff were friendly. No complaints.

    Photos
    Quest Diagnostics
    Quest Diagnostics - In between Ross and 09 Ranch Market, off Pipeline and Chino Hills Pkwy.

    In between Ross and 09 Ranch Market, off Pipeline and Chino Hills Pkwy.

    Quest Diagnostics

    See all

    Labcorp - Blood draw station

    Labcorp

    3.4(97 reviews)
    4.6 mi

    I am very pleased with the services offered at the San Dimas office. However it is very hard to get…read morean appointment. They must be doing something right. Me personally, I don't really have a complaint except it is hard to get an appointment.

    I don't use Labcorp but I have to take my elderly mother to Labcorp to get her blood drawn etc. I…read morehave never liked Labcorp, and I go to Quest for my own bloodwork, but my mother's doctor always sends my mother to Labcorp. The people who work there are never very friendly, and they talk to people like they're stupid. When I have been in the waiting room waiting for mother, I hear the way they speak to people, and it's unprofessional. Today, I had to drop off a sample for my mother, and the woman at the front desk seemed very put off that she didn't come herself, I was given an attitude about it. When I was dropping off the sample in the back, one of the phlebotomists screeched at me: YOU HAVE TO CHECK THAT IN!! YOU CANNOT JUST LEAVE IT!! I was not sure if she was talking to me, so I turned around and she screeched at me again. I sort of laughed and said: yes, I know. That is why I am waiting here for the tech to take the specimen from me. As I walked out, I said: I think you all need to stop drinking coffee because you're wound up way too tight. I just hope I can get my mother's doctor to send her to Quest next time because they are friendly there. Never had an issue.

    Photos
    Labcorp
    Labcorp - QUEST

    QUEST

    Labcorp - Am I an experiment?

    See all

    Am I an experiment?

    Quest Diagnostics

    Quest Diagnostics

    2.3(74 reviews)
    5.8 mi

    I'm giving this Quest Diagnostics location on San Bernardino Rd in Covina five stars. I've been…read morehere more than ten times at this point, and honestly my experiences have consistently been smooth and efficient despite what some of the other reviews say. I think timing really matters here. I never come in for fasting labs and I almost always book afternoon appointments, which I suspect avoids the morning rush. Most of the time I'm able to get a next day appointment, and today I even got a same day slot, so it's hard for me to complain when the scheduling has been that convenient. The phlebotomist experience can be a bit hit or miss. Sometimes they're chatty and friendly, other times it feels very quiet and strictly by the book. That doesn't bother me though. I'm not there to make friends, and as a healthcare worker myself I get that they see a high volume of people and need to keep things moving. They're always clear and thorough with instructions, which I actually appreciate, especially since I'm not the biggest fan of blood draws on myself. Sometimes it hurts, sometimes it doesn't, but overall the process is quick and professional. The online check in system is a huge plus. It can feel a little tedious since they ask for a lot of information, and I'll probably just make an account to make it easier next time, but once you get the text and check in on your phone, you don't even need to use the kiosk. Even when my name didn't show up on the waiting screen, I was still the next person called. This location is super convenient to my home, the care feels standard and solid, and even when I've had to cancel appointments it's never been a big issue. For me, this place does exactly what it needs to do, and it does it well.

    Most times, they call the "victim" within 10 minutes of the appointment time, never on time. Today,…read moreFriday, it's a full house. So far 45 minutes behind schedule. How does this happen? If you need for blood drawers, hire more staff. This is no way to run a business.

    Photos
    Quest Diagnostics
    Quest Diagnostics - Sad and pathetic lobby.

    Sad and pathetic lobby.

    Quest Diagnostics

    See all

    Quest Diagnostics - laboratorytesting - Updated May 2026

    Loading...
    Loading...
    Loading...