Welcome

Charles River Clinical Services Northwest conducts clinical research trials, which test the effects of investigational drugs on volunteers.

• See the 'What are clinical trials?' section and the Frequently Asked Questions for more details.

We are always looking for participants to help us. Study participants receive a monetary stipend, study-related medical care, and great food in a fun, relaxing atmosphere. Participant Advocates are always available to ensure your comfort and safety.

• To see a list of currently enrolling studies, click here.
• To register online, click here.

We recognize how valuable your time is. Charles River is committed to making your stay enjoyable, safe, and well worth your time. We encourage you to bring a friend to share in this experience. Plus, you may earn up to $100 for each person you refer when they complete their first study.*
_{*The referral bonus may not apply to all studies, click here for more details.}

Attention Participants: Please click here for recent changes to our policies and procedures.


Holiday Hours
Our offices will be closed on November 27th and 28th for the Thanksgiving holiday, from December 23rd to December 26th for the Christmas holiday, and on January 1st in observance of New Year’s Day. However, study conduct staff will be here on November 28th and January 1st for participants who are involve in studies those days. If you have questions please don’t hesitate to contact us. We wish you and your families a happy and healthy holiday season!