From Ohio News Now:

Every state but Nevada suspends a driver's license for refusing a breath or blood test after being stopped on suspicion of drunken driving. With three new laws passed in 2005, 19 states now add civil or criminal penalties ranging from fines to jail time.

. . .

Maryland: Up to $500 fine and extra 60 days in jail if convicted of drunken driving. 29 percent.

ONN. Ohio News Now: States add to penalties for refusing DUI breath test [online] (2006). (January 7, 2006).

See also, Md. Code Ann., Trans., Section 27-101(x).

If you refused the breath/blood test your license is subject to automatic suspension in Maryland. You may avoid the automatic suspension if within 10 days of your arrest a request for a hearing (with the filing fee of $125.00) is filed with the Maryland Motor Vehicle Administration. See, Maryland MVA 10 Day Rule.

The Maryland MVA may modify the suspension and allow you to keep your license if you agree to install a ignition interlock system for one year on all vehicles owned or jointly owned. See, Md. Code Ann., Trans., Section 16-404.1.