What is the legal test for consent to medical treatment for an adult woman?

9 The same is not true for an adult woman or an emancipated minor, whose "reasonable expectation" regarding medical treatment includes "the right, in the exercise of control over [her] own body, to determine whether or not to submit to lawful medical treatment." (Cobbs v. Grant (1972) 8 Cal.3d 229, 242, 104 Cal.Rptr. 505, 502 P.2d 1.) Unlike the statutes governing consent to medical treatment for minors, there are no usual requirements that an adult woman obtain consent or authorization from a third party to obtain care.