Not a pro but AFAIK the threshold for anyone saying "yup we found life" would be very high and probably that the instruments currently deployed on Mars wouldn't

Not a pro but AFAIK the threshold for anyone saying "yup we found life" would be very high and probably that the instruments currently deployed on Mars wouldn't possibly suffice to convince someone at NASA to make that call. That is, because (every?) experiments out there can be explained by a multitude of phenomenons that could be non-life based. I wouldn't be surprised if life turns out to be abundant over there and we've just been very hard-nosed on the evidence we'll accept. At least that's my understanding, when looking at summaries like https://www.youtube.com/watch?v=YwXSEP3_Rwk https://www.youtube.com/watch?v=YwXSEP3_Rwk.