it will update in ECAS under the principal application section when you click on in process.
It will say
We sent xxxxx xxxxxx medical instructions on xxxxx xx, xxxx. To avoid delays, please provide us with the information requested as soon as possible. Please consider delays in mail delivery before contacting us.
After you give your medical exam, and the hospital uploads it, it will then update in ECAS to say
Medical results have been received
Finally when you do pass the medical, it will be updated in GCKey to say
Review of medical results
- xxxxxx xx, xxxx You passed the medical exam