What is therapeutic plasma exchange?
Therapeutic plasma exchange (TPE) is a treatment that removes your plasma and replaces it. Plasma is the liquid part of blood, the part left when the cells are taken out. A machine separates the plasma from the blood cells, either by spinning or through a membrane filter. The plasma is discarded. Your cells go back to you with a replacement fluid such as human albumin, donor plasma, or both.
TPE removes plasma contents without choosing between them. That includes the harmful antibody or protein a doctor is targeting. It also includes useful ones: your own antibodies, clotting factors and some medicines. "Plasmapheresis" is often used as another name for TPE, though it can also mean plasma donation.
How is TPE different from DFPP?
Double filtration plasmapheresis (DFPP) is a related procedure with a second filter. Your plasma passes through that filter, which holds back large molecules and returns the rest. ASFA (2026) does not suggest that DFPP could generally replace TPE.
| TPE | DFPP | |
|---|---|---|
| What is removed | All plasma components, without selection | Plasma components larger than the second filter's pores |
| What you get back | A replacement fluid: albumin, donor plasma, or both | Your own filtered plasma, so less replacement fluid is needed |
| Main uses | Diseases driven by harmful antibodies, such as Guillain-Barré syndrome and myasthenia gravis | Small pores: antibodies. Larger pores: one method of removing LDL cholesterol particles (lipoprotein apheresis) |
If a clinic calls its treatment "blood purification", ask which of the two you will have. The fluids you receive, and some of the risks, differ.
When is plasma exchange an established treatment?
ASFA's Tenth Special Issue (2026) grades 183 uses of apheresis across 93 diseases. It sorts each use into one of four categories:
| Category | What it means | Examples (procedure) |
|---|---|---|
| I | Accepted first-line treatment, alone or with other treatment | Guillain-Barré syndrome (TPE); thrombotic thrombocytopenic purpura, TTP (TPE); short-term treatment of myasthenia gravis (TPE or DFPP); CIDP, a chronic nerve disease (TPE); symptomatic thick blood from excess antibody proteins (TPE); inherited very high cholesterol, homozygous form (lipoprotein apheresis) |
| II | Accepted second-line treatment | Multiple sclerosis relapse (TPE); inherited high cholesterol, heterozygous form, and high Lp(a) with worsening artery disease (lipoprotein apheresis) |
| III | Best role not established; decided case by case | Mild or moderate Alzheimer's disease (TPE); high-risk dry macular degeneration (DFPP) |
| IV | Evidence shows or suggests it is ineffective or harmful | Psoriasis (TPE) |
| Not graded | ASFA judged a fact sheet premature | Longevity, anti-ageing, removing environmental toxins or microplastics |
The evidence behind category I can be large. For Guillain-Barré syndrome, ASFA cites more than 20 randomized trials with more than 1,900 patients. A typical course there is 5 to 6 exchanges over 10 to 14 days. Untreated TTP is fatal in about 90% of cases, so ASFA advises starting treatment within 4 to 8 hours of suspicion. Each of these is a treatment for a diagnosed disease.
Does plasma exchange slow ageing or detox the blood?
It is not an established treatment for healthy people. ASFA (2026) wrote that plasma exchange removes substances circulating in the blood. It found limited evidence that it clears toxins, microplastics or other contaminants from body tissues. It also found limited evidence of better outcomes in illness, disease or death. It noted that these uses are not supported by established medical guidelines.
Two small human studies are often cited:
| Study | Who and how many | Comparison | What was measured | What it reported |
|---|---|---|---|---|
| Kim, GeroScience 2022 | 8 people having repeated TPE, in the main protein analysis | No sham group; blood from untreated young and older donors | Blood proteins and cell markers | A protein profile the authors describe as younger |
| Fuentealba, Aging Cell 2025 | 42 healthy adults, almost all over 50 | Sham treatment with the machine running on water | About 36 epigenetic "clocks" (DNA-based age estimates) and other blood markers | TPE plus donated antibodies (IVIG): average clock age fell 2.61 years by the second blood draw, against sham. The paper's Results and Discussion describe its 1.32-year figure for TPE alone differently. At the third draw, no group differed significantly from sham. |
The limits matter more than the headline:
- Small. The 2025 trial had no power calculation, and its authors call the findings hypothesis-generating rather than definitive.
- Not randomized in the usual sense. Groups were filled in the order people enrolled, first come, first served.
- A marker, not a health outcome. Epigenetic clocks were measured; illness, disability and lifespan were not.
- Short-lived. The clock differences were no longer significant by the third sample.
- Conflicts of interest. In both studies the exchanges were done by Global Apheresis. The 2022 paper says a co-author owns it; in 2025 three authors are affiliated with it, and several declared roles in Circulate Inc.
The Alzheimer's evidence is a separate question. ASFA rates TPE category III for mild or moderate Alzheimer's disease, after trials including a sham-controlled trial of 347 patients (AMBAR). Those trials treated people with a disease, not healthy people.
Who should not have it, and what is checked first?
StatPearls, a clinical reference on the US National Library of Medicine's bookshelf, lists these contraindications:
- No usable veins: neither large arm veins nor a central line.
- Unstable blood pressure or circulation, or a bloodstream infection (sepsis).
- A known allergy to donor plasma, albumin or the replacement fluid.
- A known allergy to heparin, an anticoagulant sometimes used instead of citrate.
- Low blood calcium, which limits the use of citrate (relative contraindication).
- An ACE inhibitor blood-pressure medicine in the last 24 hours (relative contraindication).
The 2025 ageing trial also excluded people with active cancer or infection, symptomatic coronary disease, heart failure, restrictive lung disease or asthma.
ASFA (2026) expects a doctor to document these points before the first session:
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1The reason and the goalWhy plasma exchange, what the evidence says for that reason, and which result will show it is working or should stop.
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2Your other conditions and medicinesHow the treatment affects them, and how they affect the treatment. Bring a full list, including vitamins and supplements.
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3The technical planThe anticoagulant, the replacement fluid, the access (arm veins or a catheter), and how much plasma is exchanged.
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4The number of sessionsHow many, and how often.
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5Baseline blood testsTypically a blood count, calcium and a clotting test such as fibrinogen. One US hospital also weighs patients to set the exchange volume.
Tell the team about any past reaction to blood products or medicines. If a baseline test is abnormal, that result needs a doctor's assessment in its own right. The comprehensive blood panel page explains how common blood results are read.
What happens during a session?
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1AccessA needle goes into a vein in each arm, or a catheter with two channels goes into a large vein. A neck catheter is used for small veins or a series of sessions.
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2SeparationBlood flows into the machine with an anticoagulant to stop it clotting. The machine separates out the plasma and collects it in a bag.
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3ReturnYour blood cells come back to you with the replacement fluid, through the second needle or channel.
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4MonitoringStaff watch your blood pressure and how you feel throughout. Tell them at once if you feel faint, cold or tingly.
Most exchanges remove 1 to 1.5 times your plasma volume. An NHS hospital (Cambridge University Hospitals) says a session usually takes one to two hours. A 2026 review puts it at 90 to 140 minutes, depending on whether a membrane or a centrifuge is used. The Cambridge service does not ask patients to fast; follow the clinic's written instructions. One US hospital says most patients can read, sleep or watch TV. Needle insertion, and keeping your arms still, can be uncomfortable.
What are the risks?
Most side effects are mild. A multinational registry (World Apheresis Association) followed 50,846 apheresis procedures. Side effects were mild in 2.4%, moderate in 3% and severe in 0.4%. They were more common at the first procedure than later ones: 8.4% against 5.5%. In the AMBAR trial of patients with Alzheimer's disease, 10.6% had a TPE-related side effect, against 0.7% with sham treatment.
| Risk | What happens | What the evidence says |
|---|---|---|
| Low calcium (citrate) | Tingling around the lips or in fingers and toes, a sour taste, muscle cramps | Citrate anticoagulant can lower calcium and magnesium. Calcium is given by mouth or drip. |
| Low blood pressure | Feeling faint, dizzy or sick, blurred vision, cold sweats | Most common when albumin is the replacement fluid (WAA registry). Fainting or low blood pressure made up about a third of severe reactions. |
| Vascular access | Discomfort at the needles; with a catheter, a risk of infection | Access problems were over half of mild reactions (WAA). In AMBAR, sessions through a central line had more side effects than arm veins: 20.1% against 13.1%. |
| Allergic reaction | Rash, hives, fever; rarely a severe reaction | Hives were more common with donor plasma (WAA). The FDA notes plasma can occasionally cause serious allergic reactions, including anaphylaxis. |
| Infection | From the catheter or from the treatment itself | Albumin and plasma come from donated blood. The risk of passing on an infection is small but cannot be totally ruled out. |
| Bleeding | Easy bruising; bleeding takes longer to stop | Clotting factors are removed with the plasma. In a National Taiwan University Hospital study of 37 DFPP patients, fibrinogen fell from 332 to 96 mg/dL after one session. With close monitoring and preventive transfusions, 14% had minor bleeding and none had major bleeding. |
| Medicines removed | A medicine in your blood can be partly washed out | Drugs that stay in the blood and bind to proteins are most affected (Crit Care 2026). The timing of doses is planned with the team. |
| ACE inhibitors | Flushing, low blood pressure, breathlessness, slow pulse | In a 1994 hospital review, all 14 patients on an ACE inhibitor had such a reaction during TPE with albumin. The authors advised withholding it for at least 24 hours. |
What happens after a session?
- Tiredness. Some people feel tired afterwards and need rest.
- Bruising and bleeding. One US hospital tells patients that clotting recovers 24 to 48 hours after each treatment. It advises avoiding cuts and falls in that time.
- Symptoms to report at once. Faintness, blurred vision, cold sweats, cramps, or tingling around the mouth or fingers.
For severe breathlessness, chest pain or collapse, get emergency help. In Taiwan call 119 (the local equivalent of 911).
Before you leave Taiwan, ask for a written record of each session. It should show the volume exchanged, the replacement fluid, the anticoagulant, any reaction, and the blood results before and after. If you are treated for a diagnosed condition, give that record to the specialist who manages it at home. If you had it for ageing or wellness, tell your doctor at home as well.
How much does it cost at New Dawn Health?
New Dawn Health lists this treatment as the package Blood Purification - Therapeutic Plasma Exchange (TPE) at iHope Clinic in Xinyi District, Taipei. The current price is on that package page. The listing allows 3 hours for the appointment. The package starts with an in-person consultation with an iHope Clinic doctor, who checks whether the treatment suits you.
What the price includes is a question for the clinic: the method, the number of sessions, the replacement fluid and the blood tests. Insurance at home is a separate question. ASFA notes that commercial and government payers restrict apheresis coverage to recognized medical indications, and longevity uses are generally treated as investigational.
What should I ask the clinic before booking?
- Is the procedure TPE or DFPP?
- What is the medical reason in my case, and which result will show it worked?
- Which replacement fluid will I receive, albumin or donor plasma, and how much plasma will be exchanged?
- How many sessions does the package price include, and how far apart?
- Which blood tests are done before and after, and are they included?
- Will you use my arm veins or a catheter? If a catheter, who places it, and when does it come out?
- Which anticoagulant do you use, and how do you manage low calcium?
- Which doctor supervises the session, and what is the plan for a severe reaction?
- Which of my medicines need their timing changed, and will you speak with my prescribing doctor?
- When is it safe for me to fly home?
- Will I get the session records and blood results in English?
