At a Glance
Why Get Tested?
To determine if symptoms like sensitivity of extremities to cold is due to the presence of abnormal proteins called cryoglobulins in the blood
When to Get Tested?
When a person has 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 taken from a vein in your arm, kept at body temperature until tested in the laboratory.
Test Preparation Needed?