Therapeutic plasma exchange, often called TPE, PLEX, or apheresis is a medical procedure that removes and replaces the liquid plasma portion of your blood. It has been used in the United States for certain medical conditions in a hospital setting for decades but is now being studied and applied for many other purposes in an outpatient setting.

If you are considering TPE, understanding how it works, what the evidence supports, and what an appointment involves can help you make an informed decision.

How does therapeutic plasma exchange work?

Blood contains red blood cells, white blood cells, platelets, and a liquid called plasma. Plasma carries many substances throughout the body, including antibodies, clotting proteins, hormones, nutrients, and toxins. 

During TPE, blood travels through sterile tubing into a machine that separates the plasma from the blood cells. The plasma is removed and discared, while your blood cells are returned to you with a prescribed replacement fluid. You receive the same amount of fluid back that you lost. 

For certain diseases, removing plasma can reduce circulating substances that contribute to illness, such as autoimmune disease-causing antibodies or toxins like pesticides, microplastics, heavy metals, and mycotoxins from mold. 

At PlasmaWell, our approach uses albumin replacement and two peripheral IVs, rather than central venous catheters. Albumin is a protein normally found in plasma; the replacement solution is a manufactured product derived from donated human plasma. It is different from an infusion of whole donor plasma or “young plasma" as it acts inert whereas donor plasma brings a risk of transfusion allergic reactions. Albumin in and of itself is also a therapeutic infusion because when infused, it can very rapidly bind toxins, helping eliminate them. 

What conditions may TPE help?

TPE has an established role in selected immune, neurological, and blood disorders. For example, it can remove harmful antibodies in anti-glomerular basement membrane disease, a condition that can damage the kidneys and lungs. Its role, treatment schedule, and replacement fluid depend on the specific diagnosis.

Research into other applications—including age-related biological changes or longevity, long COVID, chronic lyme disease and dementia—is evolving quickly. At PlasmaWell we don't see TPE as the direct treatment of your condition but rather a tool that puts your body in a prime position to heal. This is why we developed the phrase Enhancing Natural Healing. 

What happens before treatment?

At PlasmaWell, the process begins with an information call, followed—when appropriate—by a more detailed evaluation.

We review your medical history, symptoms, medications, supplements, prior testing, and treatment goals. We also assess whether peripheral IV access is suitable and whether additional testing is needed.

The evaluation is an opportunity to discuss:

• The evidence relevant to your condition or goals.

• Potential benefits, risks, and alternatives.

• Whether an outpatient setting is appropriate.

• How treatment response would be assessed.

• The proposed schedule and financial commitment.

An evaluation does not guarantee that treatment will be recommended.

What should I expect during an appointment?

After reviewing your treatment plan and checking your vital signs, the team places the peripheral IVs and connects them to the FDA-cleared apheresis system. The machine calculates the amount of plasma that will be removed based on your weight and results of your Complete Blood Count (CBC) that was performed in the 1-2 weeks before treatment. 

You remain awake while the machine separates and exchanges the plasma. IV placement may cause minor discomfort. Treatment commonly takes a few hours, with additional time for preparation and observation; your team will explain the expected length of your visit. Relax in a recliner while you watch TV, listen to music, or just rest. Aside from the presence of the IVs, you should feel very little physically during the treatment. 

At PlasmaWell, an RN and a PA are physically present during treatment. Tell the team promptly if you feel cold, nauseated, lightheaded, or notice tingling around your mouth or in your hands or feet. These symptoms may require an assessment, adjustments, or stopping treatment.

What are the risks?

TPE is a medical procedure. Possible complications include low blood pressure, electrolyte changes, allergic reactions, and problems related to IV access. The anticoagulant used during treatment can lower available calcium, causing tingling or muscle symptoms and, in severe cases, more serious complications. At PlasmaWell, we are cautious about this by checking your calcium level before each treatment and giving calcium supplementation based on your level, if needed. 

Plasma exchange can also reduce clotting proteins and protective antibodies, potentially increasing bleeding or infection risk. Certain medications can be removed during the exchange, so medication review and timing are important. Do not stop or change medications without instructions from your treating clinician.

What happens afterward?

Before you leave, the team will assess how you are feeling and provide individualized instructions about activity, hydration, medications, transportation, and symptoms that need medical attention. Follow-up testing may be recommended.

The number of treatments and any decision to continue should reflect the indication, your response, and your safety—not an assumption that more treatment is always better.

At PlasmaWell, we want patients to understand both the possibilities and the limitations of TPE. An initial information call is an opportunity to ask questions and learn whether a full evaluation is an appropriate next step.

This article is for educational purposes only and does not replace individualized medical advice, diagnosis, or treatment. Treatment suitability and outcomes vary.