Staphylococcus aureus quantitative nasopharyngeal swab culture with antibiotic susceptibility testing (fish-based interpretation of susceptibility, if applicable)

What This Test Measures

The test involves collecting a swab from your nose to detect *Staphylococcus aureus*, a common bacteria that can cause infections like boils, pneumonia, or bloodstream infections. It also assesses whether the bacteria are resistant to certain antibiotics, which helps your healthcare provider choose the best treatment.

Why It’s Done

Your doctor may order this test if you have symptoms like fever, persistent sore throat, or signs of infection after surgery or medical procedures. It’s also used in high-risk groups (e.g., hospital patients, those with weakened immune systems) to prevent or manage infections.

How It Works

A healthcare provider inserts a sterile swab into your nasal passage to collect a sample. The swab is then sent to a lab, where it’s cultured to grow bacteria (if present) and tested for antibiotic sensitivity. Results may take several days to confirm.

What the Results Mean

A positive result means *Staphylococcus aureus* was found. The presence of this bacteria doesn’t always mean an infection is active, but it signals a potential risk. The antibiotic susceptibility data helps determine if your body will respond to specific medications.