The only way for Science to disagree on the conclusion of a test is to do the test again and show an error in the previous test (generally resulting in Nobel Prizes for catching an error.)
Which would still result in only 1 valid test - and only 1 valid conclusion.
I think you have to find an error in something pretty important to get a Nobel prize - if they handed them out every time someone fixed a mistake there'd be a lot more laureates.
Edited by caffeine, : No reason given.