I had a similar requirement several years ago and I settled on the service provided by my test lab. They are a large chain in India and their reports plot the trend of all the test report indicators along with baseline reference values and interpretations. Very useful for me and my doctor.

Yes, it isn't a complete interoperable EMR solution, but I kinda manage it myself by downloading the PDF reports and maintaining in my local electronic filing system. There is always some esoteric test that the doctor could order which has to be done at a specialist lab. So, my low-tech solution settles on PDFs of the reports. It works for 99% of the cases.

At least the trend in India is to lock all of this data into proprietary data silos.

There is an initiative in India currently underway to provide a digital health ID and an ecosystem for healthcare participants to share data Ayushman Bharat Digital Mission (ABDM). It is yet to take off in a big way (and hopefully it does in the next 4-5 years) and achieves the same kind of success as the payments infrastructure by NPCI that brought the UPI network.