Group A Streptococcus Detection, NAA
Use
Detection of Group A Streptococcus in throat swab specimens from patients with signs and symptoms of pharyngitis
Special Instructions
Ensure proper collection procedure by using a flocked swab and tongue depressor blade to roll the swab over the tonsillar area and posterior oropharynx. Avoid contamination by not collecting swabs immediately after the patient has used antiseptic mouthwash.
Limitations
A negative test result does not exclude the possibility of infection. Test results may be affected by improper specimen collection or if the number of organisms in the sample is below the detection limit of the test. Additionally, the use of a transport device other than an ESwab or improper storage conditions could result in test rejection.
Methodology
PCR-based (Real-time PCR)
Biomarkers
LOINC Codes
- 60489-2
- 60489-2
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen
Oropharyngeal Swab
Volume
Single flocked swab
Minimum Volume
Not provided
Container
ESwab only (Copan Liquid Amies Elution Swab transport, PeopleSoft No. 130839)
Collection Instructions
Using a flocked swab and tongue depressor blade, roll the swab over the tonsillar area and posterior oropharynx, including any ulceration, exudate, lesion, or any area of apparent inflammation.
Patient Preparation
Do not collect throat swab specimens immediately after patients have used antiseptic mouthwash.
Storage Instructions
Throat swabs in liquid Amies (ESwab) are transported to the laboratory at room temperature within 48 hours after specimen collection, or they can be refrigerated for up to six days.
Causes for Rejection
Improper labeling; transport device other than an ESwab; specimen received at room temperature after 48 hours or refrigerated after six days; source other than throat
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 6 days |
| Frozen | N/A |
Other tests from different labs that may be relevant