Cryoglobulins (Serum)

What Are Cryoglobulins?

Cryoglobulins are abnormal proteins found in your blood that can clump together when the temperature drops. These clumps can block blood flow and damage tissues, leading to symptoms like joint pain, swelling, or skin rashes. They may also be linked to certain infections or autoimmune diseases.

Why Might You Need This Test?

Your healthcare provider may order this test if you have symptoms such as unexplained fevers, joint pain, skin changes, or signs of organ damage. It’s also used to diagnose or monitor conditions like hepatitis, lupus, or other autoimmune disorders that may involve abnormal proteins.

How Is the Test Performed?

A blood sample is drawn from a vein in your arm. The blood is then analyzed to detect the presence of cryoglobulins, which may appear as clumps when cooled. This process helps identify if abnormal proteins are present and their potential impact on your health.

What Could High or Low Levels Indicate?

Elevated cryoglobulins may suggest conditions like mixed cryoglobulinemia, hepatitis, or certain autoimmune diseases. Low or normal levels typically don’t indicate a problem unless symptoms are present, in which case further evaluation may be needed.