The patient (or whoever is paying the bill) and the provider determines the "worth". If they can't agree on a price, then it's not worthwhile.
In communism, would you really want to extract the equivalent of $50m of labour and resources in order to provide one person with this test? I can't imagine how that would be affordable.
Putting a monetary price on it in order to quantify the cost doesn't fundamentally change the equation. In the communist utopia I imagine it would be more like forcing x architects, engineers and builders to construct the facilities for the testing, x researchers and scientists to develop and conduct the test, x caregivers, plumbers, cleaners, drivers, baristas, chefs, etc for x weeks to provide this "free" test for one individual. Is that "worth" it?