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HelpTest Code GAS Culture, Group A Strep Only
Synonyms/Keywords
GAS
Specimen Requirements
| Fasting Required | Specimen Type | Preferred Container/Tube | Acceptable Container/Tube | Specimen Volume | Specimen Minimum Volume (allows for 1 repeat) |
Pediatric Minimum Volume (no repeat) |
|---|---|---|---|---|---|---|
| No |
Throat, Perianal, Rectal, Vaginal
|
ESwab™ | Other Amies medium based swab | 1 swab | 1 swab | 1 swab |
Collection/Processing Instructions
Specimens should be delivered to the microbiology laboratory as soon as possible. Culture of specimens older than 24 hours may lead to a reduction in recovery of microorganisms.
Swabs:
- ESwab™: collect one swab for Gram stain, aerobic and anaerobic cultures, and an additional swab for each additional culture type or stain (e.g. fungus or mycobacteria).
- Other Amies medium swab types: collect one swab for every culture and stain (including Gram) to be ordered.
See eSwab collection video for more information
For recovery of pathogens other than Group A Strep, use Culture, Aerobic with Sensitivities (AERS).
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Swabs | Room Temp | ≤ 4 hours |
| Refrigerate | > 4 hours |
Rejection Criteria
| Dry swab |
| Specimens other than throat, perianal, rectal, vaginal |
| Leaking specimens |
| Specimens older than 4 days |
Test Information
ESwab™ is a trademark of Copan Diagnostics.
Reference Range Information
| Performing Location | Reference Range |
|---|---|
| All Performing Sites | Negative for Group A Beta Hemolytic Strep |
Marshfield Labs Performing Department
Marshfield Labs Microbiology
Performing Information
| Performing Location | Day(s) Test Performed | Analytical Time | Methodology/Instrumentation |
|---|---|---|---|
| Marshfield | Monday through Sunday | 3 days | Conventional culture, manual or automated identification methods, and nucleic acid sequence analysis as needed. |
CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 87081 | Culture | |||
| 87077 | Aerobic isolate, definitive ID | as needed | ||
| 87147 | Immunologic method, per antiserum | as needed | ||
| 87153 | Identification by nucleic acid sequencing method | as needed |
Outreach CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 87081 | Culture | |||
| 87077 | Aerobic isolate, definitive ID | as needed | ||
| 87147 | Immunologic method, per antiserum | as needed | ||
| 87153 | Identification by nucleic acid sequencing method | as needed |
Ordering Applications
| Ordering Application | Description |
|---|---|
| Cerner | Group A Strep Only Culture |