Shares of Dexcom (DXCM) are higher today after UnitedHealth (UNH) announced at its investor conference this morning that it is partnering with the company to advance Dexcom's "smarter, less invasive way of continually monitoring blood glucose throughout the day."

Optum plans on enrolling nearly 10,000 participants in a pilot in the next few months, UnitedHealth announced during its event. Via the test program, participants will use their smartphones to see realtime glucose readings, UnitedHealth Group will receive all this information wirelessly, and all that data will also be fed back to the participants' primary care physician, the company added.

In afternoon trading, DexCom is near its best levels of the session, rising nearly 5% to $58.24.