Overview
STI swab testing collects samples from sites such as cervix, urethra, rectum or throat. It is important when infection may be present outside the urine-tested sites.
What it detects
STI nucleic acid at the sampled site.
Sample type
Swab from cervix, urethra, rectum or throat.
When it may be appropriate
Symptoms at specific sites or exposure involving those sites.
Window period considerations
Timing depends on infection and test; repeat testing may be needed after recent exposure.
Test limitations
Only detects infection at sampled sites; multiple sites may need testing.
Interpretation basics
Positive results support site-specific infection; negative results apply to sampled sites.
Follow-up recommendations
Treat positives and consider testing other exposed sites.
Key points
- Site-specific detection
- Important for rectal/oral exposure
- May need multiple swabs
- Complements urine testing
When to seek care
- Rectal symptoms
- Throat exposure
- Cervical symptoms