The purpose of this research project is to collect and store blood samples and clinical data. Researchers can then use the stored samples in future studies. Through such studies, they hope to find new ways to detect, treat, and maybe even prevent or cure health problems.

Blood samples are collected in the comfort and safety of your home by a certified medical professional. We have mobile phlebotomists located in major metropolitan areas around the nation for your convenience.

Inclusion Criteria:

• Males and females >18 to 100 years old
• A diagnosis of neurological condition
• Proof of diagnosis can be provided

Control group: Healthy donors, males and females, 18 to 100 years of age

Exclusion Criteria

• Receipt of blood products within 30 days of study enrollment
• Receipt of an investigational (unapproved) drug within 30 days of study enrollment

A diagnosis of Multiple Sclerosis, Alzheimer's, Huntington's, or Parkinson's Disease.