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February 9, 2012

Apheresis
(Hemapheresis, Pheresis)

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What is apheresis?

Apheresis is a medical procedure that involves removing whole blood from a donor or patient and separating the blood into individual components so that one particular component can be removed. The remaining blood components then are re-introduced back into the bloodstream of the patient or donor.

Apheresis is used for the collection of donor blood components (such a platelets or plasma) as well as for the treatment for certain medical conditions in which a part of the blood that contains disease-provoking elements is removed.

Apheresis is also called pheresis or hemapheresis. The terminology used may also reflect the component of blood that is being removed, such as:

Total plasma exchange (removal of plasma and replacement with fresh frozen plasma) can also be performed using the apheresis procedure. It is also used for the collection of stem cells from the peripheral blood.




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Apheresis (Hemapheresis, Pheresis)

What is cryoglobulinemia?

Cryoglobulinemia is a medical condition that is caused by proteins called cryoglobulins, which are present in the blood. Cryoglobulins are abnormal proteins that by definition have the unusual property of precipitating from the serum specimen when it is chilled in the laboratory and redissolving into the serum upon rewarming.

Cryoglobulins may or may not be causing disease. Cryoglobulins can accompany another condition (such as dermatomyositis, multiple myeloma, or lymphoma) or be an isolated condition themselves, called cryoglobulinemia.

What conditions are associated with cryoglobulinemia?

Cryoglobulins in the blood (cryoglobulinemia) can cause conditions throughout the body. These conditions include problems resulting from abnormal "thickness" of the blood (such as stroke or blood clots in the eyes leading to blindness) and inflammation of blood vessels, referred to as va...

Read the Essential Mixed Cryoglobulinemia article »







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