Warfarin FAQ

If I am asked by the Pharmacist Provider Services pharmacist to get my INR checked on the weekend, which lab should I go to?

The following labs are available to check your INR on the weekend:

LabCorp located on the 5th floor of the main hospital building, Coral section, suite 520
  Hours: 7 a.m. – 3:30 p.m.
  Phone:  1.800.598.2796
Directions and parking information

Main hospital lab located in the Purple zone, room 1-374.
Directions and parking information
Special instructions: enter the hospital from the Central parking garage and take the escalator down to the first floor.  Follow the signage to the Purple zone. Purple 1-374 will be on your left hand side. Pick up the telephone by the entrance and state that you’re there for a blood draw.

When should I page the on call pharmacist?

You may page the on call pharmacist on weekends or after hours if you:

  • Have unusual bleeding/bruising
  • Miss a dose of warfarin or take an incorrect dose
  • Have an illness with fever, vomiting, or diarrhea
  • Are prescribed a new medication
  • Run out of your supply of warfarin and have no refills available
  • You have any other concerns which require consultation.

When should I go to the ER?

Please go to the ER if you:

  • Fall or hit your head
  • Have a nosebleed that doesn’t stop after applying direct pressure and an icepack
  • Have significant blood in your urine or stool
  • Are vomiting what looks like coffee grounds
  • Are experiencing symptoms that may indicate a new or worsening blood clot (pain, swelling, redness or warmth in the arms or legs)

When should I call 911?

  • Chest pain or difficulty breathing
  • Signs or symptoms of stroke such as:
    • Sudden weakness or numbness of the face, arm, or leg on one side of the body
    • Sudden dimness or loss of vision, particularly in one eye
    • Loss of speech, or trouble talking or understanding speech
    • Sudden, severe headaches with no apparent cause
    • Unexplained dizziness, unsteadiness, or sudden falls, especially along with any of the previous symptoms

How many green vegetables should I eat while on warfarin? 

Vitamin K is found in many foods, especially green, leafy vegetables. Vitamin K lowers the INR, whereas warfarin raises the INR.

You can decide the amount of green vegetables you’d like to eat on a weekly basis and try to stay as consistent as possible. You should pay most attention to the dark green leafy vegetables, which are high in vitamin K.

Our clinic will work with you to find a warfarin dose that can balance the vitamin K in your diet and help keep the INR stable.

What is My Navigator and how do I use it?

My Navigator is the patient portal that securely connects you with your EvergreenHealth electronic health record.

If you have a question for your Anticoagulation Clinic pharmacist, you can send an email via My Navigator. To send a message via My Navigator, you will need to select a specific pharmacist’s name. Once received, the question will be answered within the next business day. Please note that the response will not necessarily come from the same pharmacist that you select. To ensure a prompt reply, your question will be answered by any available pharmacist.
For more information about My Navigator, visit https://www.evergreenhealth.com/my-navigator