The whole blood, blood serum or plasma, urine, or breath withdrawn under division (D)(1)(b) of this section shall be analyzed in accordance with methods approved by the director of health by an individual possessing a valid permit issued by the director pursuant to section 3701.143 of the Revised Code.
If the chemical test was administered pursuant to division (D)(1)(b) of this section, the person tested may have a physician, a registered nurse, or a qualified technician, chemist, or phlebotomist of the person's own choosing administer a chemical test or tests in addition to any administered at the direction of a law enforcement officer, and shall be so advised. The failure or inability to obtain an additional test by a person shall not preclude the admission of evidence relating to the test or tests taken at the direction of a law enforcement officer.
R.C. § 1547.11