Contact Information
For information and to ask questions about a participating in a study, please contact:
Patient Recruitment and Public Liaison Office
Toll Free: 1-800-411-1222
TTY: 1-866-411-1010
Se habla español.
Office hours: 8 am to 8 pm, Eastern Time
If you reach voicemail, please leave:
- Your name
- Your phone number (clearly stated and repeated)
- Times when it might be best for us to return your call
We usually return calls during regular working hours (Eastern Time).
- When leaving a message, please let us know if we may leave detailed information on your voicemail. If you prefer, we can simply leave a call-back number to protect your confidentiality.
Info on other NIH studies
NIH Patient Recruitment & Public Liaison Office
1-800-411-1222 (also for Spanish Speakers)
Info for Health Volunteers
1-800-892-3276 (toll free) or 301-496-4763
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