Labcorp
1595 Grand Avenue, San Marcos, CA 92078
About Us

Labcorp is a global life sciences and healthcare company located at 1595 Grand Avenue, San Marcos, California, United States. Our mission is to improve health and improve lives by leveraging science, technology, and innovation to provide clear, confident answers about your health.
At our San Marcos location, we offer Laboratory Testing, Drug Testing, Routine Labwork, and more. Our Patient Service Centers (PSCs) provide routine medical testing and recommended screenings based on your age and gender, with testing results available in your Labcorp Patient Portal for easy access by you and your healthcare provider.
You can conveniently purchase trusted lab tests online, choose from over 40 curated tests including overall wellness, allergies, COVID-19, fertility, vitamins, and nutrition. We also offer testing and monitoring for specific chronic conditions like rheumatoid arthritis and diabetes.
Appointments are encouraged but not required, walk-ins are welcome. To schedule an appointment, visit Labcorp's Labs & Appointments page and find the nearest patient service center. Remember to talk to your doctor about any medications you're taking before making changes prior to your tests.
Visit our Patient Resource Center for information on preventative care, chronic conditions, and preparing for doctor visits to stay proactive and knowledgeable about your health. Take control of your health and visit Labcorp in San Marcos today.
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Hours open
Monday:
1:00 PM - 4:00 PM
Tuesday:
1:00 PM - 4:00 PM
Wednesday:
1:00 PM - 4:00 PM
Thursday:
1:00 PM - 4:00 PM
Friday:
1:00 PM - 4:00 PM
Saturday:
Closed
Sunday:
Closed
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Reviews
"It just seems like they are understaffed right now. It is a small place so make sure you make an appointment. Thankfully i was able to do a walk in! The guy there was fast and nice and needle work was good"
"I really do not understand the low ratings given. I have had blood drawn here many times, and each time has been great. It’s very easy to make an appointment on line, and then I’ve never had to wait more then a few minutes. Every tech I’ve seen has been kind, competent and caring. My veins have a tendency to roll, but none of the techs had a problem doing the draw. Again, I say thank you and great job to everyone at San Marcos LabCorp!"
"If I could give zero stars I would. Phlebotomy tech (Claudia) was also the receptionist was very unprofessional and very mean. I kindly explained I've been having my blood drawn for 40+ years and techs would have to use a butterfly on me becasue of my small veins and other medical issues including nerve damage. Claudia ignored my request with no response. I asked her again if she could please use a butterfly and she said "no we only use them on certain patients." She then proceeded to jam a needle in my arm so hard I jumped and felt like I was going to pass out. She took my blood vile/viles and left with it down the hall, i turned to ask if i could confirm it was my name and birthdate on the vile becasue thats what the normal procedure is , she didnt say a word just held up the vile and turned around. I left there in tears. I was unable to drive home because she blew out my vein and my hand became completetly numb. My arm had a huge lump, is black and purple. I wish i could show a photo. I called my daughter and husband and they came to pick me up. It was one of the worst experiences of my life and I'm 61. Claudia should not work with people, she obviously does not like her job or people and it shows very clearly."
"This place was amazing! I went in as a walk in and was out in less than 15 minutes. MaryLou took my blood flawlessly! I have to say that there are a lot of negative reviews that I read and being the person I am it created a lot of anxiety for me, for no reason. Let’s enjoy some consideration. This place was really great."
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