Most manufacturers of medical devices and testing equipment are still tethered to the 1960's. Tell your doctor you would like some info sent to you and they will ask for your fax number. Same if you try to send something to them. There are a few doctors and hospitals that make your data available electronically, such as Johns Hopkins, and my family doctor.
I have a device that measures my glucose levels for my diabetes. It is manufacturer by One-Touch. It has a bluetooth connection to my iPhone so I can upload and download info. For data older than 30 days, I need to connect the device by usb to a Windoze computer. Go figure. It took two years after the initial announcement for this device to be offered for sale. This is glacial progress. Will it be another two years before I can access the info through Healthkit?