Md. Code Ann., Health-Gen. § 20-110
(a) Except as provided in subsection (b) of this section, the following are not civilly liable for taking a blood sample from an individual without consent of the individual or for testing the blood sample, if the blood is taken at the request of a police officer or a sheriff or officer in a sheriff's office for a criminal investigation:
(3) Any of the following who take the blood in the course of duties at a licensed hospital:
Added by Acts 1982, c. 21, § 2, eff. July 1, 1982.
Formerly Art. 43, § 566A-1.