In addition to such other persons as may be authorized and empowered, any one of the following persons is authorized and empowered to consent, either orally or otherwise, to any surgical or medical treatment or procedures including autopsy not prohibited by law which may be suggested, recommended, prescribed or directed by a duly licensed physician:

(a) Any adult, for himself;

(b) Any parent, whether an adult or a minor, for his minor child;

(c) Any married person, whether an adult or a minor, for himself, and for his spouse;
(d) Any person temporarily standing in loco parentis whether formally serving or not, for the minor under his care and any guardian, for his ward;
(e) Any female regardless of age or marital status, for herself when given in connection with pregnancy or childbirth;

(f) In the absence of a parent, any adult, for his minor brother or sister;
or

(g) In the absence of a parent, any grandparent for his minor
grandchild.

SOURCE: GC § 9995.4.