Quality Test Case

 Hi -

I have the following scenario

Spec A    with tests

1-TestA

2-TestB

3-TestC

During the batch process..i will take 5 Samples..

First 2 samples will do TestA and TestB

The third Sample will do ALL TESTS

The last 2 samples will do TestA and TestC

Do i need to create NEW SPEC for each possibility ? or each time i will work in the same spec..but PURGE the tests which i won't need ?

Or just make all tests optional in the spec ?

Note that i can't complete the sample disposition unless all mandatory tests have results

Or there are maybe other solutions ..Please advise..