Advanced Laboratory Services

Offering healthcare testing services to local Texas and Oklahoma communities.

Reliable. Dependable. Experienced.

PCR COVID-19 Testing in Grayson County

Our testing methods ensure you receive results fast and reliably, often within 24-48 hours!

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Appointment Scheduling Disclaimer:

We are receiving high scheduling volumes. Please come at your specified appointment time. DO NOT COME EARLY. To maintain our schedule, we may test a patient only at their appointed time. Arriving early does not guarantee you get to take your test early and it is within our rights to make you wait until your scheduled testing time.


This place was great. They were clean, quick, and the results were available in a very timely manner. They are the Chick-Fil-A of Covid testing!

Jamie W.

Advanced Lab Services has professional staff that excel at providing quality COVID-19 testing. Their drive-up testing is fast, and it's super simple to schedule testing on their website. 5 out of 5 stars, for sure.

Marshall C.

It was fast and painless. Appointment was easy to setup.

Sherry H.


Clinical Toxicology testing measures and interprets the concentrations of drugs and other toxic substance in human biological fluids. This testing may be necessary when multiple drug ingestion is involved, as the effects of one drug may mask the signs and symptoms of other drugs. Our analyses helps guide clinicians in predicting future toxic effects, confirming a different diagnosis, or guiding a therapy. 

Our Lab

The team at Advanced Laboratory Services is passionate about developing innovative, ground-breaking tests, products and tools to enhance patient care, provide value to our clients, and transform information into knowledge and insights. Our crucial diagnostic information supports and enhances the decisions people make to improve patients’ health.

Our facility is underpinned by world-class research, state-of-the-art technology, scientific, bioinformatics and clinical expertise. Committed to providing the highest-quality testing, we use a combination of instruments, analytical techniques and methods to solve your problem or request.






500 E Peyton St, Suite 300

Sherman, TX 75090


Monday – Friday /// 9am – 4pm

Saturday /// 9am – 1pm

Sunday /// Closed

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