Contact Us

Contact Info

Please do NOT use the contact form to the left as it sometimes does not work to get us the message. We recommend you email us directly with any questions or concerns to the email address:

BLT System

Dr. John W. Larson

18140 Zane Street NW #303

Elk River, MN  55330


Phone:  763-515-3405

Note that when calling this phone number you will likely have to leave a voice message and someone will return your call as soon as possible.


Please note the above address is not a location to provide your lab samples.  All lab sample must be provided at a LabCorp facility.