1. A medical, scientific, or technical method or process that has not been validated through rigorous testing, clinical trials, or established research
The experimental treatment was considered an unproven procedure and was not covered by insurance.
O tratamento experimental era considerado um procedimento não comprovado e não era coberto pelo seguro.
2. A technique or approach lacking sufficient evidence of safety and efficacy
Doctors refused to perform the unproven procedure without further research.
Os médicos recusaram-se a realizar o procedimento não comprovado sem mais pesquisa.