Cytapheresis of Volunteer Donors

This study is currently recruiting participants. (see Contacts and Locations)
Verified November 2013 by National Institutes of Health Clinical Center (CC)
Information provided by (Responsible Party):
National Institutes of Health Clinical Center (CC) ( National Institute on Aging (NIA) ) Identifier:
First received: February 24, 2005
Last updated: June 24, 2014
Last verified: November 2013


- National Institute on Aging researchers are looking at studies that require large numbers of white blood cells for lab use. Standard blood samples do not provide enough white blood cells for these studies. Researchers want to use cytapheresis to collect white blood cells from volunteer donors. This procedure can collect larger amounts of white blood cells and reduce the amount of fluid and other cells that are lost.


- To use cytapheresis to collect white blood cells for study.


- Healthy blood donors at least 18 years of age.


  • Participants will be screened according to the usual blood donation procedures.
  • Participants will provide white blood cells through cytapheresis. The blood cells will be collected in a machine that separates the white blood cells from the rest of the blood. The rest of the blood will be returned to the donor.
  • Participants may have this type of donation every 56 days (six times per year). They will be asked to become a repeat donor. A donation schedule may be set up.
  • Once a year, participants will have blood tests to continue to be eligible as a donor.


Study Type: Observational
Study Design: Time Perspective: Prospective
Official Title: Cytapheresis of Volunteer Donors

Further study details as provided by National Institutes of Health Clinical Center (CC):

Primary Outcome Measures:
  • Mechanism to collect and process components from healthy donors for distribution for in vitro research [ Time Frame: Ongoing ] [ Designated as safety issue: No ]

Estimated Enrollment: 99999999
Study Start Date: January 2003
Detailed Description:

Cytapheresis is an automated method / process of cell removal and collection that involves a continuous flow cell separation by centrifugation and the withdrawal of a particular blood component. This allows blood components not collected to be continuously returned to the donor. Guidance and recommendations for the performance of these procedures are provided in detail in the Standards of the American Association of Blood Banks (AABB) and in the Code of Federal Regulations (CFR).

This study is designed to provide white blood cells obtained by Cytapheresis to National Institute on Aging (NIA) researchers for other in-vitro research studies.

The subject population consists of healthy males and females 18 years and older. Study subjects are anticipated to be non-patient community volunteers. Individuals will not be excluded based on gender, race or ethnicity. The number of subjects to be enrolled will be 999 this will allow us to try and maintain 200 actively participating in this protocol. Volunteers are screened initially and annually by a health history questionnaire and bleeding or immune disorders. Participants may undergo a cytapheresis procedure every fifty-six days.


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
  • Eligibility Criteria:

After receiving test results, the Principal Investigator or designee completes the On Study Eligibility Form and authorizes eligibility. Study eligibility will be determined in accordance with blood donation guidelines recommended by the AABB and Code of Federal Regulations (CFR).

Exclusion Criteria:

Significant abnormalities are found on the health history questionnaire or in the results of blood tests.

Pregnant or nursing mother.

Inadequate venous access for the cell collection procedure.

Severe infection in the past two months.

On any medication that can alter white blood cell function.

A medical finding that shows a participant could not go through this procedure.

Unable to provide informed consent.

It is less than six weeks since participation in another research study which is felt by the Principal Investigator to be incompatible with this study.

Test results are positive for viral infections.

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00104325

Contact: Julia L McKelvey, R.N. (410) 350-3929
Contact: Josephine M Egan, M.D. (410) 558-8414

United States, Maryland
National Institute of Aging, Clinical Research Unit Recruiting
Baltimore, Maryland, United States, 21224
Contact: NIA Studies Recruitment    410-350-3941   
Sponsors and Collaborators
Principal Investigator: Josephine M Egan, M.D. National Institute on Aging (NIA)
  More Information

No publications provided

Responsible Party: National Institutes of Health Clinical Center (CC) ( National Institute on Aging (NIA) ) Identifier: NCT00104325     History of Changes
Other Study ID Numbers: 999903316, 03-AG-N316
Study First Received: February 24, 2005
Last Updated: June 24, 2014
Health Authority: United States: Federal Government

Keywords provided by National Institutes of Health Clinical Center (CC):
Blood Collection
Volunteer Donor
White Blood Cells processed this record on September 30, 2014