S. aureus DNA in Nasopharyngeal Respiratory Specimen (Qualitative)

Why This Test Is Done

Your healthcare provider may order this test if you’ve had recent exposure to *S. aureus*, show symptoms of infection (such as fever, cough, or skin sores), or are at higher risk (e.g., immunocompromised, recent surgery). It’s also used in settings like hospitals or long-term care facilities to monitor for outbreaks.

What to Expect Before the Test

You’ll likely have a quick nasal or throat swab. No special preparation is needed, but avoid eating, drinking, or brushing your teeth for 30 minutes before the test if instructed. The swab is painless and takes only a few seconds.

What the Results Mean

A **positive** result means *S. aureus* DNA was found, suggesting possible infection. A **negative** result means no detectable DNA was found, but this doesn’t rule out infection entirely—other tests may be needed. Follow-up care depends on your symptoms and medical history.

Common Causes of False Results

False negatives can occur if the sample wasn’t collected properly or if the bacteria were cleared before testing. False positives are rare but may happen if contamination occurred during sample handling. Discuss results with your provider for guidance.