Was heißt »erprobt« auf Englisch?

Das Adjektiv »erprobt« lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Deutsch/Englische Beispielübersetzungen

Unser Institut erprobt neue Therapieverfahren.: Our institute is testing new therapeutic methods.
Wie ich höre, wird gerade ein neuer Impfstoff erprobt.: I understand a new vaccine is being tested.

Has that been proved scientifically?
They've proved their worth.
They've proved themselves.
They have proved themselves.
The rumours proved to be true.
A penalty in the second half proved decisive.
Parliament approved the austerity measures by a narrow majority.
None of us has all the relevant information, therefore as our knowledge grows some ideas will be proved right and some wrong.
You've proved it multiple times.
They've proved it multiple times.
He thinks it hasn't been proved.
That must be proved first.
Unfortunately, that rumor proved to be true.
That rumour proved, unfortunately, to be true.
Unfortunately, that rumour proved to be true.
It has to be proved first.
That has to be proved first.
Tom got approved.
The countermeasures that were introduced proved completely ineffective.
The first proposal proved too complicated.