Contact Us

Caltest Analytical Laboratory

1885 North Kelly Road
Napa, California 94558 

Phone: 707.258.4000
Toll Free 888-258-TEST (8378)
Fax: 707.226.1001

Business Hours: Monday - Friday, 8am - 5pm PCT

The lab is closed in recognition of the following holidays:

New Year's Day
President's Day
Memorial Day
Independence Day
Labor Day
Thanksgiving Day
Christmas Day

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