I'm sorry, but I doubt anyone here can answer your question about the testing protocols in Abu Dhabi. You said that these tests are done at Al Madina Occupational Health Centre. My advice would be for you to contact THEM for the answer to your question.
I have included some information below for the center:
The Al Madina Occupational Health Centre:
Working Hours ( Week day)
Sun-Thurs: 7:00 AM to 3:00 PM
Working Hours ( weekend)
Closed
Telephone Number
80050
Email
***@****
P.O Box
11,355
WebSite
https://www.seha.ae/ahs/english/Pages/default.aspx
I hope this helps you find the answer you're looking for.
RubyWitch