Streptococcus Group A Antigen, with Reflex to Culture
Also known as: Strep A
Use
This test first performs a rapid antigen detection for Group A Streptococcus (Streptococcus pyogenes) to quickly identify the likely cause of pharyngitis. A negative rapid antigen result triggers a reflex to throat culture for confirmation, improving diagnostic sensitivity and ensuring accurate detection.
Special Instructions
This is a true reflex; if the rapid antigen is negative, a culture is performed at additional charge.
Limitations
Rapid antigen tests have limited sensitivity and may yield false negatives; therefore, negative results reflex to culture. Culture requires successful sample collection and growth, which may take longer and may still miss organisms under certain conditions.
Methodology
Immunoassay (Rapid antigen immunoassay)
Biomarkers
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Other
Volume
Not provided
Minimum Volume
Not provided
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |