Group B Streptococcus identification

Laboratory Fee Schedule

Procedure #: MZZ0449Z

CPT: 87077, 87147

Synonym(s):	Beta strep, GBS, β, Group A, GAS
Requisition Form	G-2B.
Test Description	Identification of beta (β) hemolytic Streptococcus spp.
Pre-Approval Needed	N/A
Supplemental Information Required	N/A
Supplemental Form(s)	N/A
Performed on Specimens from (sources)	Human
Sample/Specimen Type for Testing	Pure isolate
Minimum Volume/Size Required	At least one viable colony
Storage/Preservation Prior to Shipping	Room temperature or refrigerated.
Transport Medium	Any medium that supports growth
Specimen Labeling	Two patient-specific identifiers required (e.g., patient full name, date of birth, Medical record number) Identifiers on specimen must exactly match submission form.
Shipping and Specimen Handling Requirements	Ship according to Dangerous Good Regulations, IATA, and/or CFR 49 Ship specimens overnight Monday-Thursday to avoid weekend deliveries.
Method	MALDI-TOF (mass spectrometry), Bacterial culture
Turn-around Time	3-21 days.
Interferences/Limitations	Can only be used to identify Group A and Group B Streptococcus spp. All other Streptococcus sp. will be identified by another method. 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.
Common Causes for Rejection	Insufficient 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
Additional Information	Additional subtyping such as emm or T-typing is NOT performed in this laboratory.