[SanchoP]

Actually, Texas is a non-refusal state, and they can forcefully obtain a blood sample with an on the spot warrant.

I have heard that but never heard of it being done unless the person had to be blood typed anyway at the emergency room. (unconscious)
Having been the target of a political "hit job" myself,this has all the earmarks. (My mother was president of a newly formed MADD chapter that threw a helluva kink in the "good ol' boy" network.)
On any "drunk" charge they must hold you a mandatory 8 hrs but watch the DA drag this out for all the press it's worth.

[TexasGunLover]

It happens here every weekend, especially holiday weekends. Very common, dozens of times a week.