Plasma exchange (plasmapheresis) (Therapeutic plasma exchange (TPE))
A treatment that removes the liquid part of your blood (plasma), to take out harmful substances such as antibodies, and replaces it with a substitute fluid before returning the blood to you.
✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review
In short
- It removes the liquid part of your blood to take out harmful substances such as antibodies, replacing it with a substitute fluid.
- It is used for specific conditions and is usually given as a short course, often alongside other treatments.
- It controls the effect rather than curing the cause, so the body can keep making the harmful substance unless other treatment is also given.
- It needs a line into a blood vessel, which carries its own small risks, and is given under close supervision.
A plain-English summary. The detail — including risks and recovery — is below.
At a glance
A general guide. Your specialist will give you advice for your situation.
Removes harmful substances such as antibodies from the blood relatively quickly
It is only appropriate for specific conditions where harmful substances in the plasma are driving the problem; it is not a general detox or wellness...
You are monitored throughout. Tingling, feeling cold or light-headed can be treated on the spot, for example by adjusting the machine or giving calcium.
Close monitoring during each session, with prompt treatment of low calcium, low blood pressure or reactions
You are monitored throughout. Tingling, feeling cold or light-headed can be treated on the spot, for example by...
You may feel tired for a while. The line is cared for between sessions, and you are watched for any bleeding...
Blood tests track calcium, clotting and blood counts, and the team watches how your underlying condition is...
The line is usually removed once treatment finishes. Your underlying illness continues to be managed, often with...
What is plasma exchange (plasmapheresis)?
Plasma is the liquid part of your blood that carries cells, proteins and antibodies. In some illnesses, the body produces harmful antibodies or other substances in the plasma that attack the body's own tissues or cause disease. Plasma exchange (also called plasmapheresis or therapeutic plasma exchange) removes plasma to take these harmful substances out.
During treatment, blood is drawn through a tube (line), a machine separates the plasma from the blood cells, the plasma is discarded, and the cells are returned to you mixed with a replacement fluid, such as albumin or donor plasma. Only a small amount of blood is outside the body at any moment. It is usually given as a course of several sessions.
Plasma exchange removes harmful substances and can help bring certain conditions under control, often alongside medicines that reduce how much of the harmful substance the body makes. It treats the effect rather than the underlying cause, so it is frequently part of a wider treatment plan rather than a stand-alone cure.
Types, options & approaches
There may be different ways to do this. The right approach depends on the clinical question and your circumstances.
Options at a glance
These are the main approaches described in this guide. The right option depends on the diagnosis, your goals and what your clinician thinks is safe.
Centrifuge-based plasma exchange
A machine spins the blood to separate the plasma from the cells, much like the method used in blood donation, then returns the cells with replacement fluid.
Filter-based (membrane) plasma exchange
A special filter separates the plasma from the blood cells. This method is sometimes used on kidney (dialysis-type) machines and in particular settings.
Replacement fluid options
The removed plasma is replaced with albumin (a blood protein solution), donor plasma, or a combination, chosen according to your condition and clotting needs.
Vascular access (the line)
Treatment needs reliable access to a blood vessel, often a central line in the neck or groin, or sometimes large veins in the arms, placed before the course begins.
Preparing for your treatment
- Make sure you understand why plasma exchange is being recommended, what it can and cannot do, and how it fits with your other treatments.
- Tell the team about all your medicines, including blood thinners and blood-pressure tablets, and any allergies.
- Mention any previous reactions to donor plasma or blood products, or to medicines used during the procedure.
- Tell the team if you have heart problems, low blood pressure, bleeding tendencies or you could be pregnant.
- Expect a line to be placed into a blood vessel beforehand, usually under local anaesthetic.
- Plan for several sessions over a week or two, and arrange any practical support you may need.
- Ask whether any of your regular medicines should be timed around sessions, as some can be removed by the exchange.
What happens
Before treatment, a line is placed into a large blood vessel, usually in the neck or groin, often under local anaesthetic, to allow blood to be taken out and returned. You then sit or lie down for the session.
During each session, blood passes from the line into a machine that separates the plasma from the blood cells. The plasma, containing the harmful substances, is discarded, and your blood cells are returned to you mixed with a replacement fluid such as albumin or donor plasma. Only a small amount of blood (less than a cupful) is outside your body at any time. A session usually takes a few hours, during which you are closely monitored.
A course is often several sessions, sometimes daily or every other day, over one to two weeks, depending on your condition. The team checks your blood pressure, calcium and clotting, and watches for reactions throughout.
Is this treatment right for me?
A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.
May not be suitable if…
- It is only appropriate for specific conditions where harmful substances in the plasma are driving the problem; it is not a general detox or wellness treatment.
- It may be unsafe in people who are very unstable, severely low in blood pressure, or cannot have a line placed.
- Significant bleeding problems may need careful management because clotting proteins can be removed.
- Used alone, it will not help if the underlying condition is not also treated.
Delay or rearrange if…
- You have an active infection, particularly at a potential line site.
- You are very unstable and need stabilising first.
- There is unmanaged severe low blood pressure or a bleeding problem that needs addressing.
- Safe vascular access cannot yet be arranged.
- Key decisions about the underlying diagnosis or wider treatment plan are still outstanding.
Alternatives to discuss
- Medicines that reduce or block the harmful substance, such as immune-suppressing or targeted treatments
- Intravenous immunoglobulin (IVIg) for some immune conditions, depending on the diagnosis
- Supportive care while other treatments take effect
- No plasma exchange if the expected benefit is small or the diagnosis does not warrant it
Before you decide
Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.
What matters most to me?
Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.
What are all my options?
Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.
What would make me pause?
Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.
What happens if I do nothing today?
For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.
Comfort, sedation or contrast choices
If local anaesthetic, sedation, contrast or pain relief is used, ask what is planned, why, and what it means afterwards.
Benefits
- Removes harmful substances such as antibodies from the blood relatively quickly
- Can help bring certain serious conditions under control
- May speed recovery in some immune-related illnesses
- Can be used when other treatments work too slowly or are not enough on their own
- Allows replacement with clotting factors (using donor plasma) where bleeding risk is a concern
Risks & complications
- Tingling around the mouth or fingers from a temporary fall in calcium
- Low blood pressure, dizziness or feeling faint during a session
- Discomfort, bruising or problems at the line site
- Feeling cold or tired during or after treatment
- Allergic reactions to the replacement fluid (especially donor plasma) or the filter
- Infection related to the line
- Bleeding or bruising, as some clotting proteins are removed with the plasma
- Removal of some medicines, reducing their effect
- A severe allergic (anaphylactic) reaction needing emergency treatment
- Serious line complications, such as a collapsed lung when a neck or chest line is placed, or a clot
- A serious bloodstream infection
- A reaction to citrate or other agents used to stop the blood clotting in the machine
Most side effects, such as tingling from low calcium, feeling faint or mild reactions, are manageable and treated during the session. The more important risks relate to the line (infection, bleeding or, rarely, a collapsed lung when placed) and to reactions to the replacement fluid. Because plasma exchange can remove clotting proteins and some medicines, ask how these are monitored and replaced, and what is done if you react to the replacement fluid.
Published figures to discuss
Plasma exchange is generally well tolerated, but reactions and complications do occur, and their frequency varies with the replacement fluid used, the type of vascular access and the patient's underlying condition. Reliable, generalisable percentages are hard to quote because reported rates differ widely between settings and definitions, and donor-plasma replacement carries more reaction risk than albumin. We have therefore described risks qualitatively rather than attaching specific percentages that could mislead; your team can discuss the likelihood in your particular case.
| Figure | Reported range | How to interpret it | Source / confidence |
|---|---|---|---|
| Low blood pressure, tingling or cramps during exchange | Common short-term effects | Fluid shifts and citrate anticoagulant can cause symptoms that are usually managed during the session. | Guide sourcesClinical context |
| Line-related infection, bleeding or clot | Access-dependent | Risk is higher if a central venous line is needed rather than peripheral access. | NHS Blood and Transplant — Therapeutic apheresis treatmentsnhsbt.nhs.ukSource-linked context |
| Allergic reaction to plasma replacement | Uncommon but recognised | Albumin and plasma have different reaction profiles; staff monitor during treatment. | Guide sourcesClinical context |
| Underlying disease not controlled by exchange alone | Condition-dependent | Vasculitis, TTP, myasthenia and antibody-mediated disease usually need disease-specific treatment as well. | Guide sourcesClinical context |
These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.
What happens afterwards
There is usually no physical recovery from each session itself, though you may feel tired or cold. What matters afterwards is how your underlying condition responds and how the line is cared for between sessions.
- Feeling tired or cold during or after a session
- Brief tingling around the mouth or fingers that settles
- Some bruising or tenderness at the line site
- Improvement in the underlying condition that may be gradual rather than immediate
Aftercare
- Follow advice on caring for the line and keeping the site clean and dry between sessions.
- Report any redness, swelling, pain or discharge at the line site, or any fever.
- Tell the team about bleeding, bruising, dizziness or feeling unwell after a session.
- Attend all planned sessions and blood tests, as the course is designed to work as a whole.
- Continue other prescribed treatments for your underlying condition unless told otherwise.
- Stay hydrated and rest as needed, especially if you feel tired after sessions.
- Check who to contact urgently between sessions if you become unwell.
- Clear understanding of why plasma exchange is being used and what it can do
- List of medicines and any allergies shared with the team
- Knowing how the line will be cared for between sessions
- Signs of line infection and reactions understood
- Plan for attending several sessions over one to two weeks
- Urgent contact number saved for problems between sessions
Scars and how they heal
There is no surgical wound, but a line is placed into a blood vessel, usually in the neck or groin, which leaves a small puncture site and sometimes bruising. The line is removed when the course finishes, and the site heals over. Marks are usually minor.
⚠ Get urgent help if…
- Difficulty breathing, swelling of the face or lips, widespread rash or feeling faint during or after a session — possible severe reaction, seek emergency help
- Fever, chills, or redness, swelling or discharge at the line site — possible infection
- Bleeding that will not stop, or new heavy bruising
- Sudden chest pain or breathlessness after a line is placed in the neck or chest
- Severe dizziness, fainting or palpitations
- Persistent or severe tingling, muscle cramps or twitching
Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.
General guidance — it doesn't replace the specific advice your specialist gives you.
Results & realistic expectations
When plasma exchange works well, it lowers the level of the harmful substance in the blood and helps bring the underlying condition under control, sometimes with improvement over a few days. In many conditions it is given alongside medicines that reduce how much of the harmful substance the body makes.
Plasma exchange treats the effect rather than the cause, so the benefit may be temporary unless the underlying illness is also treated, and the body can produce the harmful substance again. How well it works, and how quickly, depends on the specific condition, and your team will explain what response to expect and how it will be measured.
The effect of plasma exchange can be relatively short-lived, because the body may keep making the harmful substance, which is why it is usually combined with other treatment and given as a course. Some people need repeat courses or ongoing treatment for their underlying condition. Your team monitors your response and decides whether further plasma exchange is needed.
Related tests, treatments or support
Plasma exchange is usually part of a wider treatment plan and is often combined with medicines that reduce the harmful substance the body makes, such as immune-suppressing treatments. The choice of replacement fluid (albumin or donor plasma) is tailored to your needs, including clotting. Coordination with the team treating your underlying condition is important.
Follow-up & long-term care
After a course, you are followed up by the team managing your underlying condition, with blood tests to monitor your response and check blood counts, clotting and calcium. The line is usually removed once treatment finishes. Further courses of plasma exchange are arranged only if your condition needs them, and ongoing treatment usually focuses on the underlying illness.
- Monitoring of your underlying condition and its response to treatment
- Blood tests to check blood counts, clotting and calcium after treatment
- Ongoing medicines for the underlying illness as advised
- Watching for the need for repeat courses in some conditions
- Care of any line while it remains in place, and prompt reporting of problems
Repeat, follow-on and what comes next
- Some conditions need more than one course of plasma exchange.
- Treatment is commonly adjusted, for example changing the replacement fluid or number of sessions.
- Because the benefit can be temporary, ongoing treatment of the underlying condition is usually needed.
- The line may need replacing or re-siting if there are access problems.
Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.
What good aftercare looks like
- Close monitoring during each session, with prompt treatment of low calcium, low blood pressure or reactions
- Careful line care and clear advice on signs of infection or bleeding
- Blood tests to track clotting, blood counts and calcium across the course
- A named contact and urgent route for problems between sessions
- Coordinated ongoing treatment of the underlying condition by the responsible specialist team
What affects the cost
Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:
- The number of sessions in the course and whether repeat courses are needed
- The replacement fluid used (albumin or donor plasma) and the volume required
- Insertion and care of the line for vascular access
- Nursing and specialist apheresis staff time, and use of the machine
- Monitoring blood tests for calcium, clotting and blood counts
- Treatment of the underlying condition, which is usually given alongside
- Whether care is NHS-funded or, unusually, private, and exactly what is included
- The number of planned sessions and the cost if further courses are needed
- The line insertion procedure and its care
- The replacement fluid type and quantity
- Monitoring blood tests during and after the course
- Management and cost of any reaction or complication
- How treatment of the underlying condition is provided and charged
On the NHS? Plasma exchange is provided on the NHS for specific conditions, usually through specialist or apheresis services; private provision is uncommon.
You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.
Consent traps and marketing red flags
These are not small details. They are often where patients lose choice, time to reflect, or realistic expectations.
Consent traps
- Presenting plasma exchange as a cure rather than one part of treatment
- Not explaining that the benefit can be temporary unless the underlying illness is treated
- Underplaying the risks of the line, including bleeding and, rarely, a collapsed lung
- Not discussing reactions to donor plasma or removal of clotting proteins and medicines
- Failing to set out what monitoring and emergency care are in place during sessions
Marketing red flags
- Offering plasma exchange or 'plasmapheresis' as a detox, anti-ageing or general wellness treatment
- Claims that it cures conditions for which there is no good evidence
- Downplaying the need for a line and the risks that go with it
- Not mentioning that it usually needs to be combined with other treatment
Choosing a specialist safely
- Check the specialist is on the GMC Specialist Register for this area.
- Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
- You're entitled to time to consider and to have your questions answered before you agree — the specialist who looks after you should explain it, not a salesperson.
- Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
- You're entitled to your total cost in writing — including any follow-up — before you decide.
Questions to ask your medical professional
Take this to your consultation. A good specialist will welcome every one of these.
- Why is plasma exchange the right treatment for my condition, and what will it achieve?
- How many sessions will I need, and will I also need other treatment to stop the problem returning?
- What replacement fluid will be used, and why, given my clotting and any allergies?
- What type of line will I need, where will it go, and what are its risks?
- How will you monitor my calcium, clotting and blood counts, and manage any reaction?
- What should I watch for between sessions, and who do I contact urgently?
- Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
- Will you be the specialist who carries out my treatment, and who looks after me afterwards?
- What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
- What does a realistic result look like — and what can this treatment not achieve?
- What are my options, including waiting, doing nothing for now, or choosing a different approach?
- Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
- What is the total cost in writing, including any follow-ups, and how much time do I have to decide?
Frequently asked questions
Is plasma exchange available on the NHS?
Does it cure my condition?
Is the procedure painful?
How many sessions will I need?
What is the blood replaced with?
What are the main risks?
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How we made this page
Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →
Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.
Sources & standards: NHS Blood and Transplant — Therapeutic apheresis treatments University College London Hospitals NHS — Plasma exchange service University Hospitals Birmingham NHS — Therapeutic plasma exchange (patient leaflet) Great Ormond Street Hospital — Plasma exchange in immune-mediated neurological conditions UK Kidney Association — clinical guidelines
Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.
Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.
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