Active Surveillance Culture/Testing (ASC/AST)
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ASC/AST means active surveillance culture/testing for a facility but is NOT used in patient diagnosis and treatment.
For purposes of The National Healthcare Safety Network (NHSN) surveillance, ASC/AST refers to active testing that is intended to identify the presence of microorganisms to create or suspend isolation precautions.
Examples of this would include:
- Nasal swab for Methicillin-resistant Staphylococcus aureus (MRSA)
- Rectal swab for Vancomycin-Resistant Enterococcus (VRE)
- Monitoring for eradication of a carrier state.
Those cultures are reported as part of a facility’s infection prevention and control surveillance to help stop outbreaks in establishments such as hospitals.