Stem Cell Apheresis

Apheresis is a process used to collect stem cells from autologous, allogeneic and syngeneic stem cell sources at Phoenix Children's Hospital.

During the apheresis procedure, the patient's blood is collected through a special central venous catheter and spun in a machine. The stem cells are separated and collected, and the rest of the blood returned to the patient through their catheter.

How Long Does Apheresis Take?

Apheresis collections take place approximately 2–3 months before a stem cell transplant.

Patients should for 2–5 days of collection, depending on the number of stem cells needed and the number collected each time.

The actual collection process takes from 4–8 hours per day and is done in the hospital by a specially trained nurse.

The patient is not required to stay in the hospital after apheresis unless their physician finds it necessary.

What is the Apheresis Experience Like?

Generally, the apheresis procedure is a comfortable experience.

Some patients feel a slight tingling sensation, numbness or chills during the procedure. This can be easily corrected by the apheresis nurse.

The patient should wear loose fitting clothes and take all prescribed medications as scheduled.

The patient may bring quiet activities such as a book to read to help pass the time during collection.

After the stem cells are collected, they are stored at United Blood Services and preserved with a chemical called DMSO.

If you have any questions about apheresis or any other part of the stem cell transplant process, please contact us.