Contact Us

If you would like to inquire about our services, check prices, or place an order—please call us at 866.584.0887, or complete the online form below. All requests made during non-business hours will be responded to as early as possible the next business day.

NOTE: The general inquiry feature is available to forensic testing clients and criminal justice professionals. Your questions and comments will be responded to in a timely fashion. Thank you for your interest in Ascertain Forensics at Redwood Toxicology Laboratory.

Supporting you

Ascertain Forensics
at Redwood Toxicology Laboratory
3650 Westwind Blvd.
Santa Rosa, CA 95403

Phone: 866.584.0887

Contact Us

contact us online


3650 Westwind Blvd
Santa Rosa CA, 95403

© 2022 Redwood Toxicology Laboratory. All rights reserved. All trademarks referenced are trademarks of Redwood Toxicology Laboratory or their respective owners. Any photos displayed are for illustrative purposes only. Any person depicted in such photos is a model. Your use of this website and the information contained herein is subject to our  Website Terms and Conditions and Privacy PolicyInterest-Based Ads.