The newborn screening tests referenced in §37.53 of this title (relating to Disorders for Which Blood Specimen Screening is Performed) are not required for a newborn child whose parent, managing conservator, or legal guardian objects on the ground that the tests conflict with the religious tenets or practices of an organized church of which they are adherents. The objection of the parent, managing conservator, or legal guardian to the screening tests shall be entered into the medical record of the child by the physician (or other person attending a newborn, if no physician is present). The parent, managing conservator, or legal guardian must sign the entry in order for the exemption to be valid.