N.J. Stat. § 26:4-49.8
The warden or other person in charge of any jail, house of correction, or other penal or correctional institution shall require and cause a medical examination for venereal diseases to be made of any person therein confined for a period of seven days or longer and such warden or other person in charge may require such examination to be made of any person therein confined for a shorter period of time. The superintendent or other person in charge of any detention or contagious disease hospital, or any State, county or city charitable institution shall require and cause a medical examination for venereal diseases to be made of all persons admitted as soon as practicable after admission. Any board or agency operating such jail or institution shall provide a physician licensed to practice medicine and suitable facilities, equipment and supplies to examine inmates for venereal disease and to treat any inmate who is known or found to have a venereal disease and who is in need of treatment. The warden, superintendent or other person in charge of such jail or institution may isolate any inmate who refuses to submit to such examination or who refuses to permit the taking of specimens or any inmate with an infectious venereal disease. If a person has a venereal disease or if any person has refused to submit to examination or to allow specimens to be taken, the warden, superintendent or other person in charge shall notify the State department and may also notify the local health officer of the expected date of release of such person and the facts of the case. Such notification shall be made, if possible, at least five days prior to the actual date of release, and shall be made not later than the day following the date of release in any case.
N.J.S. § 26:4-49.8