Apheresis is a broad category of medical procedures that all share the same fundamental principle: separating blood into its components so that a specific component can be removed, collected, or treated. Leukapheresis is one specific type of apheresis. Understanding the distinction helps clarify which procedure is being discussed in a clinical context.
Apheresis: The Broader Category
Apheresis refers to any procedure in which blood is drawn, separated into components using centrifugation or filtration, and then a specific component is manipulated before the blood is returned to the patient. The key variable is which blood component is targeted:
- Plasma: Therapeutic plasma exchange (TPE / plasmapheresis)
- Red blood cells: Red blood cell exchange (erythrocytapheresis)
- White blood cells: Leukapheresis (leukopheresis)
- Platelets: Plateletpheresis
Each of these is a form of apheresis, targeting a specific blood component for a specific therapeutic purpose.
Leukapheresis: Targeting White Blood Cells
Leukapheresis is the specific form of apheresis in which white blood cells (leukocytes) are selectively removed from the bloodstream. It is most commonly used in patients with conditions characterized by dangerously elevated white blood cell counts — such as certain leukemias or lymphomas — where excess circulating white blood cells can cause complications like leukostasis.
Key Differences at a Glance
Apheresis is the umbrella term for all blood component separation procedures. It can target plasma, red cells, white cells, or platelets depending on the clinical indication. Leukapheresis is a specific type of apheresis that targets and removes white blood cells (leukocytes) only.
The machine and technique used may be similar across different apheresis types, but the specific settings, filters, and protocols will differ based on which component is being targeted.
Which Procedure is Right?
The choice of apheresis type depends entirely on the patient's diagnosis and treatment goals. Your physician and care team will determine which form of apheresis — if any — is clinically appropriate. Celly Mobile Dialysis provides multiple apheresis modalities, including leukapheresis, therapeutic plasma exchange, and red blood cell exchange, as part of our acute care service portfolio.
