Okla. Admin. Code § 335:15-9-4
(b) When an employer is taking remedial action to correct the effects of past discrimination, the employer may invite applicants for employment to indicate whether and to what extent they are handicapped, provided that:
(c) Nothing in this section shall prohibit an employer from conditioning an offer of employment on the results of a medical examination conducted prior to the employee's entrance on duty, provided that:
(d) Information obtained in accordance with this section as to the medical condition or history of the applicant shall be collected and maintained on separate forms that shall be accorded confidentiality as medical records, except that: