Yes - several medical test centers in Dubai will also be valid for Abu Dhabi resident visa holders and Abu Dhabi Investor and Freelancer visa holders.
Two of the best medical centers in Dubai for Abu Dhabi Visa holders at the moment are as follows:
A) IBN Battuta Mall Medical Centre
B) Salah Al Din Medical Centre
You must prepare the medical test application form on the same day inside the medical center.
You must inform the medical center that the test is for your Abu Dhabi Visa