Every day, our providers request hundreds of laboratory tests to diagnose, treat and monitor our patients. To deliver the highest-quality and most-efficient results, the laboratory located at 2637 Shadelands Drive, Suite E. is now operated by Worksite Labs. Worksite Labs is an innovative, customer-first laboratory testing company that will provide expanded testing services at the same great location.

As a valued patient, you’ll continue to benefit from the great experience with our providers – this transition will be seamless for you as we work to elevate every patient’s care.

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For questions and inquiries about Worksite Labs, please call +1 (833) 747-1122

Get a faster diagnosis with on-site clinical lab services.

Conveniently located in Walnut Creek ShadelandS
no appointment necessary

Faster results 100% of the time.

The Laboratory Services Department at BASS Medical Group is committed to providing comprehensive services to patients.Whether an annual screening, diagnostic or emergency testing is needed, our staff will provide you excellent care.

Questions? Call (925) 329-3715
Fax (925) 329-3716

Blood Draw

Whether drawing blood for an EKG Exam or from the direction of your Primary Care Physician, we have you covered for all your blood drawing needs.


At the BASS Lab, we are pediatric friendly. We have specialized pediatric tools just for your little one.

Flu, Strep, & Mono

We provide testing for the common flu, strep throat, and mononucleosis. It's important to be sure what you have, so you can treat it properly.


We have the ability to provide you a very accurate pregnancy test based on either blood or urine sampling.

No appointment necessary, walk-ins welcome.