San Francisco, US: Apple Inc's healthcare technology is spreading quickly among major US hospitals, showing early promise as a way for doctors to monitor patients remotely and lower costs.

Fourteen of 23 top hospitals contacted by Reuters said they have rolled out a pilot program of Apple's HealthKit service - which acts as a repository for patient-generated health information like blood pressure, weight or heart rate - or are in talks to do so.

The pilots aim to help physicians monitor patients with such chronic conditions as diabetes and hypertension. Apple rivals Google Inc and Samsung Electronics, which have released similar services, are only just starting to reach out to hospitals and other medical partners.

Such systems hold the promise of allowing doctors to watch for early signs of trouble and intervene before a medical problem becomes acute. That could help hospitals avoid repeat admissions, for which they are penalized under new US government guidelines, all at a relatively low cost.

US healthcare market

The US healthcare market is $3 trillion, and researcher IDC Health Insights predicts that 70% of healthcare organizations worldwide will invest by 2018 in technology including apps, wearables, remote monitoring and virtual care.

Those trying out Apple's service included at least eight of the 17 hospitals on one list ranking the best hospitals, the US News & World Report's Honour Roll. Google and Samsung had started discussions with just a few of these hospitals.

Apple's HealthKit works by gathering data from sources such as glucose measurement tools, food and exercise-tracking apps and Wi-fi connected scales. The company's Apple Watch, due for release in April, promises to add to the range of possible data, which with patients' consent can be sent to an electronic medical record for doctors to view.

First Steps

Apple has recruited informal industry advisors, including Rana and John Halamka, chief information officer of Beth Israel Deaconess Medical Center and Harvard Medical School, to discuss health data privacy and for introductions to the industry.

Experts say that there will eventually be a need for common standards to ensure that data can be gathered from both Apple's system and its competitors.