Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Parkinson's Disease Health Center

Font Size

New Blood Test for Parkinson's Studied

Test Has High Degree of Accuracy; Parkinson’s Experts Cautiously Optimistic

Blood Test for Parkinson's: Study Details continued...

Overall, the test identified 93% of those who had Parkinson's. It identified correctly 100% of those who did not have it. Both results are considered important.

It could tell the difference between blood samples from patients with Parkinson's, those with the other disorders, and those who were healthy.

Nagele estimates the test, when and if available, would cost about $200.

The new research is a ''proof of principle'' study, he says, and much more research is needed.

Blood Test for Parkinson's: Second Opinion

"It is very exciting to see that many groups around the world have been attempting to develop blood tests for Parkinson's disease," Michael Okun, MD, medical director of the National Parkinson Foundation, tells WebMD. He reviewed the results.

Although Okun calls the new study interesting, he says that ''it only included 29 patients."

However, he remains hopeful that the research will lead to a usable blood test.

"It sounds feasible and probably worth pursuing," says M. Flint Beal, MD, the Anne Parrish Titzell professor of neurology and neuroscience at the Weill Medical College of Cornell University. He also reviewed the findings. He is also developing an early blood test for Parkinson's disease that uses a different approach.

"This is something that should be validated," he says of the new test. "What frequently happens is, the test looks very good initially. When you expand it to a larger population, the accuracy falls off." Further study is needed, he says.

1 | 2

Today on WebMD

Parkinsons disease illustration
Causes, symptoms, and treatments.
hands on walker
How does the disease progress?
man with serious expression
8 common questions and answers.
intelligence quotient illustration
What are the advantages of DBS?
Parkinsons Disease Medications
Questions Doctor Parkinsons
Eating Right
Parkinsons Exercise
daughter consoling depressed mother
senior man's hands
Parkinsons Daily