(a) No coroner, deputy coroner, the State Toxicologist and his designated or appointed assistants, mortician, licensed embalmer, physician, registered nurse, duly licensed clinical laboratory technologist or clinical laboratory technician or employers of the aforementioned persons shall incur any civil or criminal liability as a result of the proper withdrawal or securing or retention of a blood and/or urine specimen as provided by this article.
(b) The State Toxicologist and his designated or appointed assistants shall incur no civil or criminal liability as a result of the proper analyses or studies of blood and/or urine specimens withdrawn and retained as provided in this article.