Apheresis — Collecting Your Cells for CAR-T
It is a blood-collection procedure, not an operation. You stay awake, nothing is cut, and the machine runs for about three to five hours while your white cells are separated out and everything else is returned. CION Cancer Clinics does not provide CAR-T or any cell therapy and does not perform apheresis for it — this page is orientation and referral guidance only. Timings indicative, as of August 2026.
Medically reviewed by Dr. C. Raghavendra Reddy, Medical Oncologist, MBBS (Gold Medal) · DNB · DM (Medical Oncology, Gold Medal) · Last reviewed August 2026
- What the procedure is — blood out through one line, white cells skimmed off by a machine, everything else returned through another — no surgery, no anaesthetic
- How long it takes — the machine runs 3–5 hours; plan a full day, and keep two days spare in case a second session is needed
- Whether it hurts — no — the needle is the only sharp part; tingling lips and fingers from the anticoagulant is the usual complaint, and is treated on the spot
- What happens next — the bag goes to a manufacturing laboratory for several weeks, which is why bridging treatment is usually planned for the gap
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What is apheresis for CAR-T therapy?
Apheresis is a blood-collection procedure, not an operation. Blood leaves your body through one line, a machine separates out the layer containing white cells, and everything else is returned through a second line. You stay awake. Nothing is cut. The cells collected that day are the raw material your CAR-T treatment is later made from.
Nobody explains this step in advance, and that is why it frightens people. Families are told a great deal about the infusion and the hospital stay, and almost nothing about the appointment that comes weeks earlier. So the first mental picture is usually wrong — a theatre, an anaesthetic, something taken out of the bone. None of that is what happens. It is closer to donating blood platelets than to any procedure in your cancer treatment so far.
Why your own cells are needed at all. CAR-T is made individually, from one patient, for that patient. The T cells in the collected fraction are sent to a laboratory, given a receptor that recognises a target on the cancer cells, grown in number and tested before release. There is no shelf stock and no substitute batch. That is also why the calendar is unforgiving: a collection that yields too few cells, or a batch that fails testing, restarts the sequence rather than delaying it by a day.
The medical name you may see on the form. Your paperwork may say leukapheresis, mononuclear cell collection or T-cell harvest. These all describe the same appointment. If a consent form uses a word you have not heard, ask the apheresis nurse to point to it on the machine — they do this every week and the explanation takes two minutes.
Said plainly, before anything else: CION Cancer Clinics does not provide CAR-T or any other cell therapy, does not perform apheresis for it, and quotes no price for any part of it. This page is orientation and referral guidance only, so that a family preparing for a collection appointment at an accredited centre knows what the day involves. Where referral is genuinely the right next step, we will say so and help you get the record in order first.
Did you know?
The bag collected in a few hours on a single morning is the entire raw material for a treatment that then takes weeks to manufacture. There is no second sample in reserve. That is why the unit checks your blood counts before it will fix the date, and why you may be asked to come back for a top-up session if the cell count in the bag falls short.
How long does apheresis for CAR-T take?
The machine itself usually runs for three to five hours. Plan for a full day at the hospital once tests, line placement, setup and observation are counted. Most people are collected in one session. Some are asked back for a second day, because the cell count in the bag has to clear a threshold before the batch is accepted.
| Stage | Where you are | Typically takes |
|---|---|---|
| Eligibility bloods, counts and virology screening | Outpatient, days before | A separate short visit |
| Arrival, consent, vein assessment or central line placement | Apheresis unit | 30–90 minutes |
| Machine primed, lines connected, baseline observations | On the bed or recliner | 15–30 minutes |
| The collection run itself — blood cycling continuously | Lying still, both arms occupied | 3–5 hours |
| Lines removed, calcium and blood pressure checked, rest | Recovery area | 30–60 minutes |
| Cell count run on the collected bag | Laboratory, same day | Result usually the same day |
| A second session, if the yield was short | Apheresis unit again | The next day or soon after |
| Bag labelled, chilled or frozen, shipped for manufacturing | You go home; the wait begins | Several weeks |
The gap after collection is the part families under-plan. Disease does not pause while a batch is being made, so your team may give interim treatment to hold things steady — that is the subject of Bridging Therapy: Treatment While You Wait for CAR-T. Ask on collection day what the plan is for those weeks, rather than assuming there is nothing in between.
Is apheresis painful?
No. The needle going in is the only sharp part, and it feels like a blood test or a drip being sited. A central line, if one is used, is placed with local anaesthetic. What people actually notice is tingling around the lips and fingertips, feeling cold, and the tedium of lying still with both arms occupied.
| What you may feel | Why it happens | What the team does |
|---|---|---|
| Tingling or numbness around the lips and fingertips | The anticoagulant in the circuit temporarily lowers calcium in the blood | Calcium is given, by mouth or through the line, and the flow rate is slowed |
| Feeling cold, sometimes shivery | Blood is returned slightly cooler than it left | Blankets and a warm room; say so early rather than enduring it |
| Light-headedness or a dip in blood pressure | Fluid shifts during the run | Observations are taken repeatedly; fluids are given and the run is paused if needed |
| A dull ache or pressure at the needle site | A wide-bore needle in an arm vein for several hours | Repositioning, support under the arm; a central line is considered if veins are poor |
| Cramping in the hands or feet | Also related to the calcium drop | Same management as tingling; it settles quickly once treated |
| Tiredness for a day or two afterwards | Several hours immobile plus a shift in blood volume | Rest, fluids, and a light day planned for the day after |
| Bruising where the needle was | Normal after a large-bore line in a vein | Pressure and a dressing; report spreading swelling or persistent bleeding |
| Chest tightness or breathlessness | Uncommon, and always taken seriously | Tell the nurse immediately — the run is stopped and you are assessed |
Tell the nurse the moment anything changes rather than waiting to see whether it passes. Everything in the first six rows is routine, expected and treatable within minutes; the unit would far rather slow the machine down than have you endure something quietly. Patient-education guidance from bodies including NCCN and ESMO describes apheresis as a well-tolerated outpatient procedure in experienced hands.
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Ask the awkward question before the calendar starts moving
CION does not provide CAR-T or the apheresis collection for it. We do read your reports, explain what an accredited centre would ask of you, and point you to one when that is the right next step.
How do you prepare for the apheresis appointment?
Preparation is mostly practical rather than medical. Six decisions make the difference between a long but uneventful day and one that has to be rescheduled.
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Ask which medicines to hold, and get it in writing
Steroids and some cancer treatments affect the cells being collected, so units often ask for a gap before the date. Blood thinners and blood-pressure medicines may also need adjusting. Never stop anything on your own reading — ask the treating team and keep their written instruction with you.
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Eat, and drink well the day before
This is usually not a fasting procedure — confirm with the unit, then eat a normal meal beforehand. Being well hydrated genuinely helps the veins run and reduces light-headedness. Calcium-rich food the day before is commonly advised for the same reason calcium is given during the run.
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Bring one person, and expect them to do everything
Both your arms may be occupied for hours. Someone else has to hold a phone, open a bottle, adjust a blanket and deal with the paperwork downstairs. Plan for that person to stay the whole day and to drive or arrange the journey home afterwards.
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Dress for a cold room and a still body
Loose sleeves that push above the elbow, layers you can add, warm socks. You cannot get up mid-run, so use the bathroom before you are connected and ask about the arrangement for the hours after that.
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Ask about veins before the morning of the appointment
Apheresis needs good flow in both arms. If your veins have been used heavily for chemotherapy, the unit may plan a temporary central line instead — a small separate procedure done under local anaesthetic. Raising this in advance avoids discovering it on the day.
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Book the trip so a second session does not strand you
Only a handful of centres in India are accredited for this, so most families travel. Keep the return open by at least two days in case you are called back. Practical planning for the wider journey is set out in Travelling to Another City for CAR-T: Practical Planning.
What can delay or complicate the collection?
None of these mean something has gone wrong with your care. They are the ordinary friction of an individually manufactured treatment, and knowing them in advance takes most of the fear out of the phone call.
- The cell count in the bag falls short — you are asked back for a second session. Common, expected, and not a sign the treatment will not work.
- Blood counts are too low on the day — the unit postpones rather than running a collection that is unlikely to yield enough.
- Recent steroids or certain treatments — these can affect the cells being collected, which is why a washout gap is often required before the date.
- Veins that will not take a wide-bore needle — the plan changes to a temporary central line, adding a short procedure and usually a few hours.
- Infection or fever in the days before — collections are deferred until it has settled, because manufacturing has strict acceptance criteria.
- A manufacturing batch that fails release testing — uncommon, but when it happens the pathway restarts from a fresh collection, not from the infusion.
- Disease that moves during the manufacturing wait — the reason bridging treatment is planned rather than improvised.
Cost is the other thing families ask about here. The collection is usually billed as one component of an accredited centre's overall cell-therapy pathway rather than as a standalone item, and figures vary by centre and by scheme — treat any number you are quoted as indicative, as of August 2026, and ask for it in writing. CION quotes no price for CAR-T or for apheresis, because CION does not provide either.
Does CION provide CAR-T or the apheresis collection for it?
No. CION Cancer Clinics does not provide, administer, stock or manufacture CAR-T or any other cell therapy, and does not perform apheresis for it. We quote no price for any part of that pathway. If a message, an agent or a forwarded price list tells you otherwise, it is wrong.
What we do is read your reports and give you a straight answer. Whether this diagnosis sits in a category where CAR-T is genuinely discussed at all. What an accredited centre would realistically ask of your family in time, travel and attendance. And what the treatment already offered to you is worth, as a written second opinion. Where referral to an accredited cell-therapy centre is the right next step, we say so, and help you assemble the record before you travel — because an incomplete file is one of the commonest reasons a first appointment achieves nothing.
It is also worth knowing where this treatment does not currently apply. Approved cell therapy in India today is concentrated in specific blood cancers; work in solid tumours remains largely investigational, which CAR-T for Solid Tumours: Where the Research Stands sets out honestly. The immunotherapy given as day care at CION Cancer Clinics is checkpoint-inhibitor treatment — a different class of treatment, with a different schedule and no admission of this kind. Response-assessment PET-CT during that treatment is coordinated at partner imaging centres rather than owned by CION. Our first consultation is free, takes 45 minutes, and carries no commitment to start treatment anywhere.
Most people reach this page the night before a collection appointment
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