Last month, this question came up in a discussion forum I'm involved with:
Another challenge to which i want to get an answer to is, do developers
always need Admin rights to perform their testing? Is there not a way to
give them privilege access and yet have them get their work done. I am
afraid that if Admin rights are given, they would download software's at
the free will and introduce malicious code in the organization.
The short answer is "no".
The long answer leads to "no" in a roundabout manner.
Unless your developers are developing admin software they should not need admin rights to test it.