1. Preferred Alliance

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    Lathrop, CA

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    Preferred Alliance

    5.0 (1 review)
    Closed 8:00 am - 5:00 pm

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    12 years ago

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    Quest Diagnostics

    Quest Diagnostics

    2.3(59 reviews)
    9.0 mi

    It's a bit of a gamble, but my experience here has been steadily declining. During my last visit,…read morethe phlebotomist who drew my blood was rough, and I've never felt this much soreness in my arm after a blood draw. Also, their posted hours are misleading, they list 4:00 PM as the closing time, but they stop accepting walk-ins after 3:30. They'll still let you check in and wait.

    RUDEST garbage employees ever! There's not one ounce of customer care here. Everything is an…read moreinconvenience to the staff and they're extremely condescending. I came in as a walk-in because my doctor ordered a last minute blood draw that was time-sensitive, so no appointments were available. This location closes at 11am on Saturdays, so I made it a point to go within the last hour to avoid the crowd of fasting patients in the morning. I walked in and there was literally no one inside. There were 3 appointments listed within the next hour, but zero names on the waitlist and not one person in the waiting room. As I was checking in at the kiosk, one of the phlebotomists came out and said "do you have an appt? No? We won't see you today". I looked around confused and was like "but there's no one else here and you're still open". Long story short after providing some BS excuse, another staff member came out and pretty much yelled at me for even trying to do a walk-in. I told her it was a time sensitive blood draw that was ordered at the last minute, but she could care less. Instantly turned me away and just ran to the back. The women (and I only say that because I've only interacted with female staff here) are extremely rude and act like they want to be anywhere else but there. They also often have issues finding my vein and end up poking me more than once. Probably as incompetent as they are rude.

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    Quest Diagnostics
    Quest Diagnostics
    Quest Diagnostics

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    Quest Diagnostics - Waiting area.

    Quest Diagnostics

    2.3(6 reviews)
    9.1 mi

    02/14/25- Second time using this location. The check in…read morekiosk, on the right, wasn't working correctly. Wasn't scanning ID and Insurance Card. It took 3 tries after restarting check in process before it finally scanned and read the ID, but never scanned the Insurance card. There is no front desk or anyone you could have asked to help check in. Location has been clean and organized each time. Staff has always been friendly and courteous. I haven't had any issues with getting my blood drawn. The phlebotomist have been very accurate and haven't had to do more than one jab. However that does depend on your veins, if they are rolling veins. Luckily mine aren't I feel welcomed and a valued patient here. It's a quick process and as long as you make an appointment, there is very little waiting depending on how early you arrive.

    zero stars! each time i have gone here people have been very snobby. besides maybe 1 lady who took…read moremy blood once. Just tried to drop off a sample and got there at 3:58pm as they close at 4:00pm and the ladies standing on the other side of the closed door, holding their bags, waiting to clock out pointed to the sign and said they were closed and would not take my sample for my five-year-old daughter. I said you close at four and she rolled her eyes and pointed at the sign and laughed at me and shook her head. As I walked away, they exited the door and locked it. Terrible terrible customer service. Now my poor daughter will have to get swabbed again tomorrow since it will not be good now!

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    Quest Diagnostics
    Quest Diagnostics - Info screen also lists names after you are checked in of patients with appointments and stand by waiting.

    Info screen also lists names after you are checked in of patients with appointments and stand by waiting.

    Quest Diagnostics - Self check in kiosks.

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    Self check in kiosks.

    Preferred Alliance - laboratorytesting - Updated September 2026

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