At a Glance
Why Get Tested?
To determine if symptoms, like sensitivity of extremities to cold, are due to the presence of abnormal proteins called cryoglobulins in the blood, which can be associated with a variety of diseases
When to Get Tested?
When you have symptoms such as a rash, bruising, pain, weakness, joint pain, and/or paleness and coolness of the extremities that occur at cold temperatures
A blood sample drawn from a vein in your arm
Test Preparation Needed?