Group A Streptococcus Direct, DNA Probe
- Gen-Probe® Group a Streptococcus Direct Test package insert, Gen-Probe®, Inc., San Diego, California
Type: Swab of posterior oropharynx, tonsil, or other inflamed area
Container/Tube: Copan Double Dacron dry swab in transport tube without medium (red cap)
Sample Volume: One or two swabs
Storage: Throat swabs are transported to the laboratory at room temperature for 48 hours after specimen collection. After receipt in the laboratory, specimens are stored at 2°C to 8°C and tested within 72 hours.
- Throat swab that contains visible blood;
- Improper labeling
- Inappropriate specimen transport device
- Specimen received after prolonged delay (more than 48 hours)
- Source other than throat
This test uses nucleic acid hybridization for the qualitative detection of group A streptococcal RNA as an aid in the diagnosis of group A streptococcal pharyngitis from throat swabs.
Blood and potentially other chemiluminescent substances may interfere with this test. A negative test does not exclude the possibility that the numbers of group A streptococcal cells may be below the level of detection of the assay. Some strains of Streptococcus equi and rare strains of nonhemolytic streptococci which react with group G antisera may result in a false-positive reaction.
Monday - Friday