Maryland Code, Health-General § 17-202.1

(b)(1) If the results of a laboratory examination are contained in or will be filed in a medical record, as defined in § 4-301 of this article, the request for a copy of the results shall be made to the facility pursuant to the provisions of § 4-302 of this article.

(2) In all other cases, the medical laboratory may require the individual requesting a copy of the results to pay the prevailing cost of copying and transmitting the copy.