Featured Research

from universities, journals, and other organizations

Quick, easy, inexpensive cortisol testing should soon be available on all smartphones

Date:
June 24, 2014
Source:
Endocrine Society
Summary:
A device that uses any smartphone to measure the cortisol concentration in saliva has been developed by researchers. Cortisol is a hormone made by the adrenal glands that's essential for the body's response to stress, and measuring cortisol can help diagnose adrenal diseases and monitor stress levels. Current testing for salivary cortisol levels involves collecting a saliva sample and sending it to a clinical lab for analysis.

Researchers have developed a device that uses any smartphone to measure the cortisol concentration in saliva. The device was presented June 24, at ICE/ENDO 2014, the joint meeting of the International Society of Endocrinology and the Endocrine Society in Chicago.

"We have developed a method for measuring cortisol in saliva using a smartphone and a disposable test strip. This innovation enables anyone with a smartphone to measure their salivary cortisol level quickly, accurately, and affordably," said lead study author Joel R. L. Ehrenkranz, MD, director of diabetes and endocrinology of the Department of Medicine at Intermountain Healthcare in Murray, Utah.

Cortisol is a hormone made by the adrenal glands that's essential for the body's response to stress, and measuring cortisol can help diagnose adrenal diseases and monitor stress levels. Current testing for salivary cortisol levels involves collecting a saliva sample and sending it to a clinical lab for analysis.

"A lab charges about $25 to $50 for a quantitative salivary cortisol test and has a turnaround time of days to a week. This test, taken in a medical office or at home, will cost less than $5 and take less than 10 minutes," Dr. Ehrenkranz said. "The device is a reader that includes a case, a light pipe, and a lens and costs about a dollar to make. There is no battery power and it's unbreakable, passive and reusable."

Doctors worldwide can use the smartphone test to help them diagnose adrenal insufficiency and hypercortisolism and monitor physiologic variations in cortisol concentration; and individuals can monitor their own cortisol levels whenever they like.

The software is "operating-system-agnostic," he explained, meaning that the device can be used on all platforms, including iOS, Android, Windows, and BlackBerry, and it has a universal form factor that works with all smartphones.

The person being tested inserts a straw-like saliva collector under the tongue. The collector wicks the saliva by capillary action to an immunoassay strip housed in a cassette and the cassette is inserted into the reader. The smartphone uses its camera and flash to take a picture of the saliva-coated strip and an algorithm converts the image's pixel density to a cortisol value.

Marketing this test as a cortisol assay would make it a class 2 medical device, Dr. Ehrenkranz explained. He and his research team are now collecting clinical data for the FDA submission, and hope to attain approval in 2015.


Story Source:

The above story is based on materials provided by Endocrine Society. Note: Materials may be edited for content and length.


Cite This Page:

Endocrine Society. "Quick, easy, inexpensive cortisol testing should soon be available on all smartphones." ScienceDaily. ScienceDaily, 24 June 2014. <www.sciencedaily.com/releases/2014/06/140624135855.htm>.
Endocrine Society. (2014, June 24). Quick, easy, inexpensive cortisol testing should soon be available on all smartphones. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2014/06/140624135855.htm
Endocrine Society. "Quick, easy, inexpensive cortisol testing should soon be available on all smartphones." ScienceDaily. www.sciencedaily.com/releases/2014/06/140624135855.htm (accessed October 20, 2014).

Share This



More Health & Medicine News

Monday, October 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How Nigeria Beat Its Ebola Outbreak

How Nigeria Beat Its Ebola Outbreak

Newsy (Oct. 20, 2014) The World Health Organization has declared Nigeria free of Ebola. Health experts credit a bit of luck and the government's initial response. Video provided by Newsy
Powered by NewsLook.com
Another Study Suggests Viagra Is Good For The Heart

Another Study Suggests Viagra Is Good For The Heart

Newsy (Oct. 20, 2014) An ingredient in erectile-dysfunction medications such as Viagra could improve heart function. Perhaps not surprising, given Viagra's history. Video provided by Newsy
Powered by NewsLook.com
Ebola Worries End for Dozens on U.S. Watch Lists

Ebola Worries End for Dozens on U.S. Watch Lists

Reuters - US Online Video (Oct. 20, 2014) Forty-three people who had contact with Thomas Eric Duncan, the first person diagnosed with Ebola in the U.S., were cleared overnight of twice-daily monitoring after 21 days of showing no symptoms. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Fauci: Ebola Protocols to Focus on Training

Fauci: Ebola Protocols to Focus on Training

AP (Oct. 20, 2014) Dr. Anthony Fauci, head of the National Institute of Allergy and Infectious Diseases, says he expects revised CDC protocols on Ebola to focus on training, observation and ensuring health care workers are more protected. (Oct. 20) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins