Key points
- Public health laboratories can request typing or other characterization assistance from CDC for other streptococci, including catalase-negative, Gram-positive cocci, isolates.
- This testing is for research or surveillance specimens and not diagnostic specimens.
- Complete the form below in as much detail as possible.
- CDC will respond within 5 business days.

Request testing
See CDC's specimen acceptance criteria prior to completing the following request form.
Send additional questions to StrepLab@cdc.gov.