Notes on reading lab results over time, how medical records move between health systems, and what you can do to keep your own copy.
A single result inside a reference range tells you very little. The same test tracked over five years tells you a lot. Here is why that view is so hard to get, and how to build it yourself.
A code entered once, in one visit, can shape how clinicians you have never met read your chart years later. Here is the mechanism, and what the law lets you do about it.
Your records move between health systems by default. Sometimes you can stop it, sometimes you cannot, and the answer depends on which layer of sharing you mean and which state you are in.