is there any option in drupal to create a node for a particular user?
The easiest way I see to do this is by following these steps:


Install References module.
Enable User reference module under admin > modules
Create a content type (say "lab result"), and add a field of type user reference.
Now, every time you create a "lab result" you could associate it with an user.
For listing the "lab result" of a particular user you could use the Views module.