12th bar - is that the turnaround in a 12-bar blues?

I’m confused. In 12 bar blues, is the turnaround the 12th bar?
Or does one play 12 bars and then do a turnaround?

It’s the 12th bar, Skip

Thank you, David.

Hi Skip.

It’s the last two bars …


Yup, it’s all too easy to think it’s just the one bar!

OK, thank you Richard.