Good question Fulltimer50. The short answer is yes, the procedure for testing a deep cycle (RV) lead acid battery is the same as for a starting battery. For the long answer and the definitive way to properly test a lead acid battery,check out www.pacificpowerbatteries.com, scroll down and click on battery school then deep cycle batteries.
(For some reason, I can't paste the link in this response.)
There's more to testing a battery properly than clamping a load tester and reading a go/no-go gauge. (Release the Trolls . . . )
Jim