Napa-Solano-Yolo-Marin-Mendocino County Public Health Laboratory

General Information
The Napa-Solano-Yolo-Marin-Mendocino County Public Health Laboratory exists as a regional laboratory to protect local communities against communicable diseases by providing diagnostic and reference laboratory services to healthcare professionals, clinics, hospitals, and law enforcement. Water testing and tick testing services are available to the public.


Notification: the laboratory WILL BE CLOSED on Monday, July 4th in OBSERVANCE OF INDEPENDENCE DAY.

For information on testing services, click on the links below or on the left-hand panel.


Contact Information

Lab Director: Beatrix Kapusinszky, PhD, PHLD (ABB)

Assistant Lab Director: Rosa Cuevas, PhD


Napa-Solano-Yolo-Marin-Mendocino County Public Health Laboratory
2201 Courage Drive, MS 9-200
Fairfield, CA 94533
Hours: M–F 8 am–12 pm & 1 pm–5 pm
Phone: (707) 784-4410
Fax: (707) 423-1979

Map showing Napa, Solano, Yolo, and Marin counties; also location of the laboratory