Blood washing, also known medically as therapeutic plasma exchange or plasmapheresis, is a procedure that removes blood from your body, separates the liquid part (plasma) from the blood cells, and then returns the cells to you with a replacement fluid. It is a well-established medical treatment for specific autoimmune diseases and other serious conditions, not a wellness or detox trend. The procedure is performed in a hospital or specialized clinic by trained medical staff, and while it can be life-saving for certain patients, it carries real risks that require careful medical supervision.
What Is Blood Washing Used For?
Blood washing is used to treat conditions where harmful substances circulate in the plasma. These substances can be abnormal antibodies, immune complexes, or toxic proteins that attack your own body or cause blood to become too thick.
Some of the most common conditions treated with plasma exchange include:
- Myasthenia gravis – an autoimmune disease causing muscle weakness
- Guillain-Barré syndrome – a nerve condition that can cause paralysis
- Thrombotic thrombocytopenic purpura (TTP) – a rare blood clotting disorder
- Chronic inflammatory demyelinating polyneuropathy (CIDP) – a nerve disorder
- Anti-glomerular basement membrane disease – a kidney condition
- Multiple sclerosis relapses – in specific severe cases
Plasma exchange is not a treatment for infections, chronic fatigue, or general “toxin buildup.” The idea that you need to “clean” your blood for general health is not supported by medical evidence. Your kidneys and liver perform that filtering function continuously. Blood washing is a targeted therapy for specific diagnosed diseases.
How Does the Blood Washing Procedure Work?
The procedure typically takes two to three hours. A needle is placed in a vein in your arm, or sometimes a central line is inserted into a larger vein in your neck or chest for repeated treatments.
Blood flows through a machine that spins it in a centrifuge. This separates the plasma from the red blood cells, white blood cells, and platelets. The machine collects the plasma and discards it. Your blood cells are then mixed with a replacement fluid and returned to your body.
The replacement fluid is usually albumin, a protein from donated human blood, or a saline solution with albumin. Some patients receive fresh frozen plasma, which contains clotting factors and other proteins. The choice depends on your specific condition and your doctor’s judgment.
Most patients need multiple sessions. A typical course might involve five to seven treatments over one to two weeks. The exact schedule depends on the disease being treated and how you respond.
What Are the Risks of Blood Washing?
Blood washing is a medical procedure with known risks. The most common side effects are mild and temporary, but serious complications can occur.
Common side effects include:
- Low blood pressure during the procedure
- Dizziness or lightheadedness
- Nausea
- Numbness or tingling in the fingers or around the mouth
- Bruising or bleeding at the needle site
These symptoms often improve once the procedure ends. The tingling sensation is usually caused by citrate, a blood thinner used to prevent clotting in the machine. Citrate temporarily lowers calcium levels in your blood, which causes that pins-and-needles feeling.
More serious risks include:
- Allergic reactions – to the replacement fluid, especially fresh frozen plasma
- Infection – at the needle site or in the bloodstream
- Blood clots – which can travel to the lungs or brain
- Bleeding – because clotting factors are removed along with the plasma
- Low calcium levels – severe enough to cause muscle cramps or heart rhythm changes
Patients on blood-thinning medications or with heart conditions need extra monitoring. Your medical team will check your blood counts, calcium levels, and clotting function regularly throughout your treatment course.
Are There Side Effects After the Procedure?
Some patients feel fatigued for a day or two after treatment. This is normal and usually resolves on its own. You may need to rest and avoid strenuous activity for 24 hours after each session.
Because the procedure removes some of your antibodies and immune proteins, your immune system is temporarily weakened. This means you may be more susceptible to infections in the weeks following treatment. Your doctor may recommend avoiding crowded places or people who are sick during this time.
Some patients experience a drop in blood pressure that lasts several hours after the procedure. Drinking fluids and lying down can help. Your medical team will give you specific instructions based on your individual situation.
Long-term side effects are uncommon but can include anemia from repeated blood draws or low immunoglobulin levels if you receive many treatments over months. Your doctor will monitor for these issues and adjust your treatment plan as needed.
Who Should Not Have Blood Washing?
Blood washing is not safe for everyone. People with severe heart disease, unstable blood pressure, or active infections may not be suitable candidates. The procedure can also be risky for patients who cannot tolerate the fluid shifts that occur during treatment.
Pregnant women can undergo plasma exchange in certain situations, but only when the benefit clearly outweighs the risk. Some medications used during the procedure can cross the placenta, and the fluid shifts can affect blood flow to the fetus. Decisions about treatment during pregnancy are made on a case-by-case basis by a specialist team.
If you have a history of allergic reactions to blood products or albumin, tell your doctor before starting treatment. They may pre-medicate you with antihistamines or steroids to reduce the risk of a reaction.
Blood Washing vs. Kidney Dialysis: What Is the Difference?
People sometimes confuse blood washing with kidney dialysis. They are different procedures with different purposes.
Kidney dialysis removes waste products like urea and creatinine from the blood when your kidneys fail. It filters the blood through a membrane to remove these small molecules. Blood washing removes large proteins and antibodies from the plasma instead.
Dialysis is for kidney failure. Blood washing is for autoimmune and blood disorders. They are not interchangeable, and one cannot replace the other.
What Does the Evidence Say About Effectiveness?
Plasma exchange is an established treatment with strong evidence for several conditions. For thrombotic thrombocytopenic purpura, it is the standard first-line treatment and has dramatically reduced death rates from this condition. For Guillain-Barré syndrome, clinical trials have shown that plasma exchange speeds recovery when started early.
For other conditions like multiple sclerosis, the evidence is more limited. Some studies show benefit for specific types of relapses, but it is not a first-line treatment for most patients. Your doctor will only recommend plasma exchange when other treatments have not worked or when the condition is severe enough to warrant this aggressive approach.
There is no evidence that blood washing improves general health, boosts energy, or removes “toxins” in healthy people. These claims come from wellness clinics that offer plasmapheresis outside of medical guidelines. These procedures are not approved for these purposes and carry the same risks without any proven benefit.
What to Expect If Your Doctor Recommends Blood Washing
Before starting, your doctor will explain why the procedure is recommended for your specific condition. You will have blood tests to check your baseline counts, kidney function, and electrolyte levels. You may also have an ECG to check your heart rhythm.
During the procedure, you will be awake. You can watch television, listen to music, or read. A nurse will monitor your blood pressure and heart rate throughout. You can ask for a break at any time.
After each session, you will be observed for a short period before going home. If you have a central line, you will need to keep the site dry and clean. Your medical team will give you instructions for caring for the line and signs of infection to watch for.
Frequently Asked Questions
Is blood washing painful?
Most patients feel only the initial needle stick. The procedure itself is not painful, though you may feel dizzy or experience tingling sensations during treatment.
How long does a blood washing treatment take?
A single session typically takes two to three hours. Most patients need multiple sessions over one to two weeks, depending on their condition.
Can blood washing cure autoimmune diseases?
No. Plasma exchange removes harmful antibodies temporarily but does not stop your immune system from making them. It is a treatment that manages symptoms, not a cure for the underlying disease.
Is blood washing safe for detox purposes?
No. There is no medical evidence that blood washing removes toxins or improves health in people without a diagnosed condition. It carries real risks and should only be used for approved medical indications.
