Testing for intoxication without a warrant?

In another thread abou the Travon Martin shooting, a poster posted this excerpt from, I presume, the Florida criminal code:

It seems to be saying that there is an implicit warrant. I supposed that could be attacked it court, just like any other warrant, but it sounds to me like the police don’t have to convince a judge that probable cause exists, they just have to say it exists. What am I missing here?

Thanks,
Rob

At first blush (rosé), I would think the test now, survive an attack on probable cause later, is a balance of protecting rights (PC needs to be there) with preserving evidence. The time factor in securing a warrant and all.

Was there any indications that Zimmerman was “if there is probable cause to believe that the person was using a firearm while under the influence of alcoholic beverages or controlled substances”

Yes, in the same way that a driver’s license is an implicit agreement to undergo field sobriety tests.

Is it? I know they can arrest you if you refuse, but if you are convicted on that evidence alone, you can’t challenge it on 5th Amendment grounds?

Thanks,
Rob