Laboratory Fee Schedule
Procedure #: MZZ0449Z
CPT: 87077, 87147
| Synonym(s): | Beta strep, GBS, β, Group A, GAS |
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| Requisition Form | G-2B. |
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| Test Description | Identification of beta (β) hemolytic Streptococcus spp. |
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| Pre-Approval Needed | N/A |
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| Supplemental Information Required | N/A |
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| Supplemental Form(s) | N/A |
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| Performed on Specimens from (sources) | Human |
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| Sample/Specimen Type for Testing | Pure isolate |
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| Minimum Volume/Size Required | At least one viable colony |
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| Storage/Preservation Prior to Shipping | Maintain isolates at room temperature (15°C to 25°C) or cold at 2°C to 8°C. |
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| Transport Medium | Any medium that supports growth |
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| Specimen Labeling | - At least two patient-specific identifiers required on specimen (e.g., patient full name, date of birth, medical record number).
- Three unique patient identifiers are preferred.
- Patient identifiers on specimen label must exactly match identifiers on submission form (e.g., abbreviated name on label and full name on form is not acceptable.)
- Additional DSHS Laboratory specimen labeling guidelines available online here.
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| Shipping and Specimen Handling Requirements | - Ship according to Dangerous Goods Regulations, IATA, and/or CFR 49.
- Category B Biological Substance, UN3373 shipping requirements apply.
- Submitters are responsible for packaging and shipping specimens according to regulatory requirements.
- Additional DSHS Laboratory specimen shipping guidelines online here.
- Ship overnight on cold packs if specimens are refrigerated.
- Ship specimens overnight Monday–Thursday to avoid weekend deliveries.
- Do not ship specimens for holiday or weekend delivery.
- Ensure media used to isolate organisms are not expired.
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| Method | Bacterial culture; MALDI-TOF (mass spectrometry) |
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| Turn-around Time | 3–21 days |
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| Interferences/Limitations | - For use to identify only Group A and Group B Streptococcus spp.
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- Material must be viable.
- Improper storage or shipping temperatures limit organism recovery.
- In the event of an outbreak, the procedure may be modified to screen for an additional set of organisms.
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| Common Causes for Rejection | - insufficient specimen quantity
- unacceptable specimen type or source
- improper shipping conditions
- expired media or collection container
- discrepancies between specimen label and submission form
- incomplete or missing submission form
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| Additional Information | Additional subtyping such as emm or T-typing is NOT performed in this laboratory. |
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