(a) Where it appears that medical records for which a subpoena or order for production has been issued should be kept in an institution as reasonably necessary for the treatment of a patient, the court in which admission is sought shall order that reproduction of the medical records shall be made, the reproduction when duly certified to be admissible in place of the medical records.

(b) Where it does not so appear that medical records should be kept in an institution, an institution upon request at any time shall be permitted to substitute reproductions for medical records, provided such reproductions shall be accompanied by a certificate executed by the person responsible for keeping medical records that the reproductions are true and accurate copies of the medical records.

(c) A court upon good cause shown may order that available medical records be produced to determine the accuracy of reproductions made pursuant to this Code section.