Anti-Coagulation Clinic

The Anti-Coagulation Clinic monitors the blood thinning effect of Coumadin/warfarin to confirm it is adequate and not excessive. The Clinic’s exclusive focus is on monitoring Coumadin/warfarin levels, giving dosing instructions and providing necessary prescriptions.

The Anti-Coagulation Clinic visits are by doctors’ referrals only.

What to Expect, Results and Instructions

Our lab staff collect blood and analyze samples immediately. You will be given written instructions about your Coumadin/warfarin dose and when to return for your next test. Sometimes your results require the lab staff member to contact the physician overseeing the Anti-Coagulation Clinic in order to receive your dosing instructions. In this case, you will receive your written instructions within two hours. You will always receive them in written form.


Snoqualmie Valley Hospital
9801 Frontier Avenue SE, Snoqualmie, WA 98065
t (425) 831-2300
Open 24/7

Other Locations

The Snoqualmie Valley Hospital Lab expanded their Anticoagulation Clinic services to include Bellewood and University House, both located in Issaquah. Our phlebotomist is available on site at University House from 9-10:30 a.m. Tuesday mornings and at Bellewood Retirement Living from 8:30-10 a.m. Wednesdays.

Lab Services at University House
Lab Services at Bellewood Retirement Living