The Department of Corrections, the Department of the Youth Authority, and county health officers shall adopt guidelines permitting a chief medical officer to delegate his or her medical responsibilities under this title to other qualified physicians and surgeons, and his or her nonmedical responsibilities to other qualified persons, as appropriate. The chief medical officer shall not, however, delegate the duty to determine whether mandatory testing is required as provided for in Chapter 2 (commencing with Section 7510) except to another qualified physician designated to act as chief medical officer in the chief medical officer’s absence.