Product Manual

Page 40
WARNING: Unexpected results
An unexpected result may include any result that falls
outside the patient’s therapeutic target range, or a
result that falls inside the target range but is not
consistent with the patient’s current health status (e.g.,
patient is experiencing bleeding or bruising).
What can cause unexpected results:
Certain prescription drugs (for example, heparin) and certain over-
the-counter medications (for example, antibiotics) can affect the
action of oral blood thinners and the INR value.
Changes in diet, lifestyle, or taking nutritional supplements such as
ginkgo biloba can affect the action of oral blood thinners and the INR
value. Liver diseases, congestive heart failure, thyroid dysfunction,
Lupus, antiphospholipid antibody syndrome (APS) and other
diseases or conditions can affect the action of oral blood thinners and
the INR value.
Be sure to confirm whether the patient has any of these conditions
before you begin testing, and any time there are changes in patient
health status or medications after you have begun testing.
What to do when you get an unexpected result:
Follow instructions for re-testing on the Coag-Sense PT/INR meter.
For unexpected results, contact Technical Support at 1-866-903-
0890. Consider re-testing using an alternative method prior to
adjusting the patient’s dose of anticoagulant medication, or any other
corrective actions.