Leukapheresis Procedure: An Evidence-Based Patient Guide

A leukapheresis procedure is a blood-filtering treatment that selectively removes white blood cells through a machine and returns the remaining blood components to the body. It is most often used urgently for very high white blood cell counts or to collect specific blood cells for advanced therapies.

Overview: What Is a Leukapheresis Procedure?

A leukapheresis procedure is a type of apheresis, meaning a machine separates selected components of blood outside the body. During leukapheresis, white blood cells are collected and removed while red blood cells, plasma and platelets are returned to the person. It can rapidly lower an extremely high circulating white blood cell count, particularly when the count is causing or is likely to cause complications.

Leukapheresis is not a cure for the condition driving the high white blood cell count. It is usually a temporary, supportive measure used alongside treatments such as hydration, medicines and condition-specific cancer therapy. In other settings, related apheresis techniques may be used to collect white blood cells for cellular treatments or research, although the exact collection method depends on the clinical goal.

Doctors may recommend the procedure for some people with leukemia and other blood disorders when high numbers of abnormal white blood cells interfere with normal blood flow. This can be called hyperleukocytosis or leukostasis when symptoms occur. Decisions are individualized and made by hematology and apheresis specialists.

Why It May Be Recommended: Benefits and Candidacy

The main potential benefit of therapeutic leukapheresis is a fast reduction in circulating white blood cells. When white blood cells are extremely elevated, they may contribute to impaired flow in small blood vessels, which can affect organs such as the lungs or brain. In this situation, leukapheresis may help relieve symptoms while definitive treatment begins.

People are considered based on the type of leukemia or blood disorder, white blood cell level, symptoms, overall stability and how quickly other treatments can be started. Symptoms that may influence the decision include shortness of breath, low oxygen levels, confusion, severe headache, vision changes or new neurological symptoms. A high white blood cell count alone does not automatically mean that leukapheresis is needed.

Leukapheresis procedures are often considered in acute leukemia, but their role varies between disease types and clinical circumstances. The hematology team balances possible benefit against procedure-related burdens, access requirements and the urgency of chemotherapy or other disease-directed care. The procedure should not delay treatment for the underlying cause.

• Therapeutic leukapheresis: removes excess white blood cells to help manage a medical emergency.
• Cell collection apheresis: collects selected blood cells for transplantation or cell-based treatment pathways.
• Supportive care: may include intravenous fluids, medications and close monitoring before, during and after apheresis.

How the Leukapheresis Procedure Works

Leukapheresis uses an apheresis machine connected to the bloodstream through two lines: one to draw blood into the machine and another to return the remaining components. Depending on vein quality, the team may use two peripheral intravenous cannulas in the arms or a central venous catheter placed in a large vein. A central line may be preferred when reliable, higher-flow access is needed.

Inside the machine, blood is separated by centrifugation. White blood cell-rich material is collected in a designated container, while most red blood cells, plasma and platelets are returned with replacement fluids as needed. An anticoagulant is added in the tubing to keep blood from clotting during circulation through the machine.

A local leukapheresis protocol sets out safety checks, laboratory testing, vascular access planning, machine settings and monitoring requirements. Teams use established leukapheresis guidelines alongside individual clinical judgement; patients should not rely on a general leukapheresis manual found online because the procedure must be tailored and supervised by trained professionals.

Step by Step: Before, During and After Treatment

Before treatment, clinicians review the person’s diagnosis, symptoms, medicines and blood test results. Tests often include a complete blood count, electrolytes, calcium and clotting-related measures. The team explains why the procedure is being considered, discusses possible side effects and obtains informed consent. Patients should ask whether they may eat, drink or take usual medicines before arrival, as instructions can differ.

During the session, the patient usually rests in a bed or reclining chair. Blood pressure, pulse, oxygen level and symptoms are checked regularly. The length of treatment depends on body size, access flow, the starting cell count and the treatment objective, but a session commonly takes a few hours. The care team can adjust the process if discomfort or laboratory changes occur.

After the machine is disconnected, pressure is applied to peripheral access sites and the patient is observed for a period determined by their condition. Blood tests may be repeated to assess the response and to guide further treatment. Some people need more than one session, while others proceed directly to medication-based treatment once they are clinically stable.

The term leukapheresis procedure code may appear in hospital documentation, billing records or insurance communications. Coding terminology is administrative and does not describe whether the procedure is medically appropriate; the treating team can explain the clinical indication and what documentation is relevant in an individual case.

Recovery Timeline and What to Expect at Home

Many people feel tired after leukapheresis, particularly when they are already unwell from leukemia, infection, anemia or hospitalization. Mild tiredness, temporary light-headedness, bruising around an intravenous site and feeling cold during the session can occur. Recovery after an uncomplicated treatment is often measured in hours to a day, but the overall recovery timeline depends much more on the underlying illness and the treatments that follow.

The healthcare team may recommend rest, fluids if medically appropriate and careful attention to any instructions about central line care. Patients should avoid strenuous activity immediately after the procedure if they feel weak, dizzy or have a new access site. People receiving chemotherapy or intensive treatment may need additional precautions because of low immunity, bleeding risk or anemia.

Leukapheresis can lower the white blood cell count, but levels may rise again unless the underlying disease is controlled. For this reason, follow-up blood counts and a clear plan for disease-directed treatment are essential. The care team will explain when the next blood test, appointment or treatment is planned.

Risks, Side Effects and Safety Monitoring

Leukapheresis is generally performed in a monitored hospital setting, but it has possible risks. Citrate anticoagulant can temporarily lower the level of ionized calcium in the blood. This may cause tingling around the mouth or in the fingers, muscle cramps, nausea or, less commonly, more significant symptoms. Staff can recognize these effects promptly and may provide calcium or adjust the procedure.

Other possible effects include low blood pressure, dizziness, chills, fatigue, nausea and discomfort from lying still. Blood components may change temporarily, including platelet levels or hemoglobin, so laboratory monitoring is important. Problems with peripheral intravenous access or central lines can include bleeding, bruising, infection, clotting or, rarely, complications related to catheter placement.

Because people needing therapeutic leukapheresis may be seriously ill, not every symptom during care is caused by the procedure itself. The medical team assesses breathing, circulation, neurological symptoms, infection risk and the effects of the underlying condition continuously. Prompt communication about new symptoms helps the team respond safely.

When to Seek Medical Care

Anyone who has been advised to undergo leukapheresis should follow the treating team’s urgent-care instructions closely. Medical assessment is needed promptly for worsening shortness of breath, chest pain, fainting, severe headache, confusion, weakness on one side of the body, speech difficulty, new vision changes or uncontrolled bleeding. These symptoms can reflect the underlying illness or another serious problem and should not be managed at home.

After leaving the treatment area, patients should contact their care team urgently for fever, redness, warmth, swelling, drainage or persistent pain around a catheter or intravenous site. They should also report persistent tingling, muscle cramping, severe dizziness, palpitations or symptoms that do not improve after the procedure.

At Acibadem International, multidisciplinary hematology, oncology, transfusion medicine and critical care specialists in JCI-accredited hospitals can assess and treat patients who may need leukapheresis, including international patients. The most appropriate next step is always determined by a qualified clinician after reviewing the person’s symptoms, blood results and underlying diagnosis.

Frequently asked questions

Is leukapheresis the same as dialysis?

No. Both treatments circulate blood through a machine, but they have different purposes. Dialysis removes waste products and excess fluid when kidney function is impaired, while leukapheresis selectively removes white blood cells or collects specific blood cells.

How long does a leukapheresis procedure take?

A session often takes several hours, although the exact duration varies. It depends on the person’s blood volume, vascular access, machine flow, starting white blood cell count and the clinical target set by the team.

Does leukapheresis hurt?

Most people feel the needle insertion or catheter-related discomfort rather than pain from the machine itself. Some may notice coldness, tingling, cramps or light-headedness during treatment, and staff can usually address these symptoms promptly.

Can leukapheresis cure leukemia?

No. Leukapheresis can reduce circulating white blood cells quickly, but it does not eliminate leukemia cells throughout the body or treat the cause of the disease. Disease-directed treatment, such as chemotherapy or other therapies selected by hematology specialists, remains essential.

Will white blood cell counts rise again after leukapheresis?

They can rise again if the underlying disease continues producing abnormal cells. This is why leukapheresis is commonly used as a bridge or supportive measure while definitive treatment is started and monitored.

Who performs leukapheresis?

The procedure is performed by a trained apheresis team, often including nurses, transfusion medicine specialists and physicians. Hematologists and oncologists coordinate the procedure with treatment for the underlying blood disorder.

References

• American Society for Apheresis
• American Society of Hematology
• National Cancer Institute
• Leukemia & Lymphoma Society
• World Health Organization

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.