Culture, Aerobic, Nasal Swab

If your swab culture is positive, the lab has grown a microorganism from your sample. Your clinician will identify the organism and usually perform antimicrobial susceptibility testing to choose the right antibiotic, antifungal, or antiviral. You’ll receive treatment advice, any needed isolation or infection-control measures, and guidance on notifying or screening close contacts. Follow-up testing may confirm resolution.

A positive aerobic culture means that bacteria capable of growing in oxygen were recovered from the specimen. It signals bacterial growth that may represent infection, colonization, or contamination. The lab will identify the organism and perform antibiotic susceptibility testing. Clinicians interpret these results alongside symptoms, specimen type, and contamination risk to determine whether treatment is necessary.

An aerobic culture test identifies and grows bacteria (and some yeasts) that require oxygen from clinical samples—wounds, urine, sputum, throat, or blood—to detect infection. It determines the specific organism and its antibiotic susceptibilities, guiding targeted treatment and monitoring therapy. Results help distinguish true infection from contamination and guide infection‑control and public‑health responses.

A positive nasal swab means viral material from the pathogen was detected in your nasal secretions, indicating active or very recent infection. PCR tests detect genetic material and are highly sensitive; antigen tests detect viral proteins and suggest contagiousness. Clinical symptoms, exposure history and repeat or confirmatory testing guide isolation, treatment and contact tracing. False positives are uncommon but possible; follow local health advice.

Swabs can detect respiratory viruses (SARS‑CoV‑2, influenza, RSV, pertussis), bacterial infections (group A streptococcus, MRSA), sexually transmitted infections (chlamydia, gonorrhea, HPV), vaginal infections (yeast, bacterial vaginosis), wound and skin infections, and some gastrointestinal pathogens via rectal swabs. Common sampling sites are nasal, throat, nasopharyngeal, cervical/urethral, vaginal and wound swabs; tests use culture or molecular methods.

After a positive culture, the lab identifies the organism and reports antibiotic susceptibilities. Your clinician reviews results, starts or adjusts targeted therapy, and may order additional tests or repeat cultures. Infection-control steps (isolation, contact tracing) and public‑health notification are taken when necessary. Monitoring clinical response and follow-up cultures confirm clearance; treatment duration is set based on organism, infection site, and patient factors.