What Is Respiratory Syncytial Virus (RSV)?

What it is

RSV antigen

Why it matters

Major cause of infant/elderly respiratory infection.

Specimen

Swab

Interpretation

Positive = active infection

Limitations

Antigen indicates active infection

Related test: RSV Rapid Test — specimen: NP swab / Nasal aspirate

Frequently Asked Questions

What does an RSV antigen test detect? Active RSV infection — a major cause of infant/elderly respiratory illness.

Related knowledge

References

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Last reviewed: 2026-09-12