This depends on whether you are planning to discharge any bilge, gray, ballast or scrubberwash –water when in USA´s waters. If yes, then you have to show that your discharged effluent does not exceed the VGP set limits.
The USA have created discharge standards to keep their coastal waters clean, therefore all vessels sailing to USA waters must show that they do not exceed the limits as described in the VGP legislation.
Check with your classification bureau to see which laboratories are approved by them. Only laboratories that are approved by your classification bureau are eligible to perform Biological Commissioning Tests.