Streptococcus spp. Isolate, Definitive Identification

Laboratory Fee Schedule

Procedure #:  MAA0038Z

CPT:    87077

Streptococci identification – Culture
Synonym(s):Strep
Requisition FormG-2B
Test DescriptionIdentification of streptococci and related species from reference cultures.
Pre-Approval NeededN/A
Supplemental Information RequiredN/A
Supplemental Form(s)N/A
Performed on Specimens from (sources)Human
Sample/Specimen Type for TestingPure isolate
Minimum Volume/Size RequiredAt least one viable colony
Storage/Preservation Prior to ShippingStore at room temperature (15°C–25°C) or at refrigeration temperatures (2°C–8°C).
Transport MediumAppropriate medium that supports growth
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.
Shipping and Specimen Handling Requirements
  • Category B Biological Substance, UN3373 shipping requirements apply.
  • Submitters are responsible for packaging and shipping specimens according to regulatory requirements. 
  • Ship overnight on cold packs to Laboratory if storing cold.
  • Ship overnight at ambient temperatures if stored at ambient temperatures. 
  • Ship specimens overnight Monday–Thursday to avoid weekend deliveries. 
  • Do not ship specimens for holiday or weekend delivery. 
  • Ensure growth media is not expired.
  • Additional DSHS Laboratory specimen shipping guidelines online here.
MethodBacterial culture; MALDI-TOF (Mass spectrometry)
Turn-around Time2–21 days
Interferences/Limitations
  • Isolates must be viable. 
  • Improper storage or shipping temperatures limit organism recovery.
Common Causes for Rejection•    insufficient specimen (non-viable/no growth)
•    improperly stored
•    improper shipping conditions
•    expired media or collection container
•    discrepancies between specimen label and submission form
•    incomplete or missing submission form
Additional InformationN/A