Ohio Rev. Code § 4765.38: Authorized services by EMT-intermediate.

(A) An emergency medical technician-intermediate may perform any of the emergency medical services specified for EMTs-I in rules adopted under section 4765.11 of the Revised Code by the state board of emergency medical, fire, and transportation services. An EMT-I shall perform emergency medical services in accordance with this chapter and any rules adopted under it by the board.

(B)(1) Except as provided in division (B)(2) of this section, the emergency medical services provided by an EMT-I shall be performed only pursuant to one of the following:

(a) The written or verbal authorization of a physician or of the cooperating physician advisory board;

(b) An authorization transmitted through a direct communication device by a physician, physician assistant designated by a physician, or registered nurse designated by a physician;

(c) Any applicable protocols adopted by the emergency medical service organization with which the EMT-I is affiliated.

(2) Division (B)(1) of this section does not prohibit an EMT-I from complying with a do-not-resuscitate order issued by a physician assistant or advanced practice registered nurse pursuant to section 2133.211 of the Revised Code.

(C) In addition to, and in the course of, providing emergency medical treatment, an EMT-I may withdraw blood as provided under sections 1547.11, 4506.17, and 4511.19 of the Revised Code. An EMT-I shall withdraw blood in accordance with this chapter and any rules adopted under it by the board.