Key points
- Starting June 9, 2025, all Test Orders (TOs) in the CDC TOD will be renamed to indicate their accepted specimen type.
- The CDC Infectious Diseases Laboratories offer various services for laboratory testing.
- CDC only offers tests that are in the current Test Order Directory.
- See below for the Test Order Directory and tests that are currently unavailable.
About
CDC's Infectious Diseases (ID) Laboratories accept specimens from State Public Health Laboratories (SPHLs) and other federal agencies for analysis. Specimens from private healthcare providers and institutions should be submitted to the local state health department laboratory (state, county, city) for appropriate processing. The searchable Test Order Directory features an up-to-date list of orderable tests and provides information on specimen requirements, contact information, test turnaround times, and other supplemental information.
Infectious Diseases Laboratory Test Order Directory
Access the Test Order Directory here or while completing a Specimen Submission Form. Effective July 27 2026, an updated directory is available. View the Major Update Summary [PDF - 2 pages] here.
Questions about the detailed information in a Test Order should be addressed to the contact person listed for that Test Order. Contact the Infectious Diseases Specimen Submission (IDSS) help desk for questions about submitting specimens to CDC, including using the Test Order Directory.
- CDC_ID_lab_info@cdc.gov
- 1-855-612-7575 (toll free)
The IDSS help desk hours of operation are: 8:00 a.m. to 5:00 p.m. EST, Monday–Friday; closed on federal holidays.
Currently Unavailable Test Orders
21 Test Orders Offline as of 8/3/2026.
For additional questions, please contact the CDC POC listed on the individual Test Order page in the Test Order Directory.
| Test order number | Test order name | Notes |
|---|---|---|
| CDC-10166 | Bordetella pertussis Serology- Non-CLIA | Diagnostic testing temporarily paused. Please contact CDC for assistance if needed. |
| CDC-10223 | Antimicrobial Susceptibility Testing (AST) - Bacteria- CLIA | Please contact CDC as needed for technical assistance as this diagnostic testing is temporarily paused. Commercial diagnostic testing is available. |
| CDC-10225 | Nontuberculous Mycobacteria (NTM) - Identification (ID)- CLIA | Please contact CDC as needed for technical assistance as this diagnostic testing is temporarily paused. Commercial diagnostic testing is available. |
| CDC-10234 | Parasites: Morphologic Identification- CLIA | Diagnostic testing temporarily paused. Commercial diagnostic testing is available. Please contact CDC for assistance if needed. |
| CDC-10238 | Leishmania species Identification- CLIA | Diagnostic testing discontinued. Please contact CDC for assistance if needed. |
| CDC-10242 | Rubella Detection- CLIA | Please contact CDC as needed for technical assistance as this diagnostic testing is temporarily paused. |
| CDC-10248 | Measles Avidity- Non-CLIA | Diagnostic testing discontinued. Please contact CDC for assistance if needed. |
| CDC-10254 | Varicella Zoster Virus Detection (Wild-type vs. Vaccine)- Non-CLIA | Diagnostic testing with this assay has been discontinued. CDC may offer it for surveillance purposes in the future; please contact CDC for updates. |
| CDC-10255 | Varicella Zoster Virus (VZV) Serology- CLIA | Diagnostic testing temporarily paused. Commercial diagnostic testing is available. Please contact CDC for assistance if needed. |
| CDC-10345 | Lymphocytic Choriomeningitis (LCM) Testing- CLIA | Please contact CDC for technical input and other potential diagnostic testing considerations as this diagnostic test is temporarily paused. |
| CDC-10401 | Adenovirus Molecular Detection- CLIA | Please contact CDC for technical input and other potential diagnostic testing considerations as this diagnostic test is temporarily paused. |
| CDC-10426 | Staphylococcal Toxic Shock Syndrome Toxin - Identification (ID)- CLIA | Testing is temporarily paused. Please contact CDC for technical assistance if needed. |
| CDC-10457 | Baylisascariasis Serology- CLIA | Please contact CDC for technical input and other potential diagnostic testing considerations as this diagnostic testing is temporarily paused. |
| CDC-10459 | Cysticercosis Serology- CLIA | Diagnostic testing temporarily paused. Commercial diagnostic testing is available. Please contact CDC for assistance if needed. |
| CDC-10472 | Angiostrongylus cantonensis Molecular Detection- CLIA | Please contact CDC for technical input and other potential diagnostic testing considerations as this diagnostic testing is temporarily paused. Commercial diagnostic testing is available. |
| CDC-10505 | Fascioliasis Serology- CLIA | Please contact CDC for technical input and other potential diagnostic testing considerations as this diagnostic testing is temporarily paused. Commercial diagnostic testing is available. |
| CDC-10515 | Poxvirus Molecular Detection- CLIA | Diagnostic testing of Poxvirus Molecular Detection- CLIA is temporarily paused. Commercial diagnostic testing is available in some instances. Please contact CDC for technical assistance if needed. |
| CDC-10516 | Poxvirus Serology- CLIA | Testing is temporarily paused. Please contact CDC for technical assistance if needed. |
| CDC-10521 | Antimicrobial Resistant Bacteria - Colonization Screening- CLIA | Please contact CDC as needed for technical assistance as this diagnostic testing is temporarily paused. Commercial diagnostic testing and AR Laboratory Network diagnostic testing is available. |
| CDC-10559 | Transmission Electron Microscopy Evaluation for Infectious Etiologies- CLIA | Diagnostic testing temporarily paused. Please contact CDC for assistance if needed. |
| CDC-10563 | Parasites: Telediagnosis- CLIA | Diagnostic testing temporarily paused. Commercial diagnostic testing is available. Please contact CDC for assistance if needed. |
General Test Order Directory information
- Submitters can only order tests contained in the current Test Order Directory. Submitters may view the most current list of available tests by visiting the Test Order Directory site.
- A Test Order name may encompass a single test or a panel of multiple tests. To find out what tests may be performed to complete the order, contact the CDC points of contact (POCs). The CDC POCs are listed on the bottom of each Test Order.
- There are special cases where additions and/or deletions are incorporated outside of a scheduled update. Edits to current Test Orders are made on a more routine basis, as necessary. Use the corresponding version number for each Test Order to identify changes. The full downloadable Test Order Directory catalog is also regularly updated.
This page was last updated on this date. Updates may include minor edits, image changes, or other modifications to page content.
The information on this page was last reviewed by subject matter experts to ensure accuracy.