Two prominent US hospitals are preparing to launch trials with diabetics and chronic disease patients using Apple Inc’s HealthKit, offering a glimpse of how the iPhone maker’s ambitious take on healthcare will work in practice.

HealthKit, which is still under development, is the center of a new healthcare system by Apple. Regulated medical devices, such as glucose monitors with accompanying iPhone apps, can send information to HealthKit. With a patient’s consent, Apple’s service gathers data from various health apps so that it can be viewed by doctors in one place.

Stanford University Hospital doctors said they are working with Apple to let physicians track blood sugar levels for children with diabetes. Duke University is developing a pilot to track blood pressure, weight and other measurements for patients with cancer or heart disease.