A microbiological test to detect the presence of methicillin-resistant Staphylococcus aureus (MRSA) bacteria without an active infection (i.e., a "carrier" state - colonization). It is usually performed by swabbing common pregnancy areas such as the nose (nostrils), armpits, and groin area using a sterile swab. The test aims to prevent the spread of this antibiotic-resistant bacteria in hospitals and healthcare facilities, especially before surgical procedures or upon admission to intensive care units.