The dropdown values are unique across the system, so if you change any properties like abbreviation, unit, it will reflect in all the system protocols. You can check in which protocol these dropdown values are used via query.
The query for Serum specimen type is used across CPs.
Go to the home page and click on the 'Queries' card
Click on the 'Create' button from the queries list page
Keep none option in 'Select a Sollection Protocol' as it is.
Go to Specimen ā Type ā Equals ā Serum.
You can include CPās short title, specimen label, and type to verify the data in the result view.
