Okla. Stat. tit. 10A, § 1-3-101
A.
1. Either parent or the court-appointed legal guardian of a child may authorize, in writing, any adult person into whose care the minor has been entrusted to consent to any:
e. immunization, blood tests, examinations, Guidance Services, and Early Intervention Services provided by a city or county Department of Health,
to be rendered to said minor under the general or special supervision and upon the advice of a physician and surgeon licensed under the laws of the State of Oklahoma, or to consent to an x-ray examination, anesthetic, dental or surgical diagnosis or treatment and hospital care to be rendered to said minor by a dentist licensed under the laws of the State of Oklahoma.
B. Either parent, if both parents have legal custody, or the parent or person having legal custody or the legal guardian of a minor may authorize, in writing, pursuant to the provisions of Section 1-116.2 of Title 70 of the Oklahoma Statutes a school or county nurse or in the absence of such nurse, a school administrator or designated school employees to administer:
Laws 1974, SB 579, c. 208, § 1, emerg. eff. May 15, 1974; Amended by Laws 1984, HB 1550, c. 192, § 2, emerg. eff. May 14, 1984; Amended by Laws 1992, HB 2351, c. 273, § 2, eff. September 1, 1992; Amended by Laws 1994, HB 1989, c. 15, § 1, eff. September 1, 1994; Amended by Laws 2009, HB 2028, c. 233, § 7, emerg. eff. May 21, 2009 (superseded document available); Renumbered from 10 O.S. § 170.1 by Laws 2009, HB 2028, c. 233, § 7, emerg. eff. May 21, 2009.