45 C.F.R. § 1151.34
A recipient may not, except as provided below, conduct a preemployment medical examination, make preemployment inquiry as to whether the applicant is a handicapped person, or inquire as to the nature or severity of a handicap. A recipient may, however, make preemployment inquiry into an applicant's ability to perform job-related functions.
(a) When a recipient is taking remedial action to correct the effects of past discrimination, when a recipient is taking voluntary action to overcome the effects of conditions that resulted in limited participation in its federally assisted program or activity, or when a recipient is taking affirmative action pursuant to section 504 of the Act, the recipient may invite applicants for employment to indicate whether and to what extent they are handicapped, provided, that:
(b) Nothing in this section shall prohibit a recipient from conditioning an offer of employment on the results of a medical examination conducted prior to the employee's entrance on duty, provided, that:
(c) 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:
[44 FR 22734, Apr. 17, 1979; 45 FR 57129, Aug. 27, 1980]