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Diagnostic Assistance

As of 11/7/2022, the following tests are back online:

  • CDC-10460​: Echinococcosis Serology (recently added)
  • CDC 10234: Parasites: Morphologic Identification
  • CDC 10238: Leishmania Species Identification
  • CDC 10457: Baylisascariasis Serology
  • CDC 10458: Chagas Disease Serology
  • CDC 10459: Cysticercosis Serology
  • CDC 10465: Paragonimiasis Serology
  • CDC 10466: Schistosomiasis Serology
  • CDC 10467: Strongyloidiasis Serology
  • CDC 10475: Chagas Disease Molecular Detection
  • CDC 10505: Fascioliasis Serology
  • CDC 10520: Malaria: Morphological Identification

Each test request (order) requires preapproval by the CDC Parasitic Diseases Branch. For Leishmania species identification and other tests for leishmaniasis, please contact leishmania@cdc.gov to request preapproval. For all other tests, please contact dpdx@cdc.gov to request preapproval. The preapproval for your request will include important details about current submission requirements and forms.

All other assays for serological, molecular, or characterization of parasitic diseases—and Trichomonas susceptibility testing—at CDC remain temporarily offline. We are working to restart additional testing as soon as possible for each test and will update this communication as soon as we are able.

CDC offers consultation to healthcare providers in the absence of diagnostic testing. Healthcare providers needing assistance with diagnosis or management of suspected cases of parasitic diseases may contact CDC’s Parasitic Diseases Hotline at (404) 718-4745, or e-mail parasites@cdc.gov.

DPDx is a website developed and maintained by CDC’s Division of Parasitic Diseases and Malaria (DPDM) that uses the Internet to assist laboratorians and pathologists in the diagnosis of parasitic diseases, both in the United States and abroad. Please remember that DPDx will not respond to inquiries that are outside the goals and objectives of this website.

If you are a laboratorian, pathologist, or other health professional, please click here.

If you are a patient with a medical emergency, contacting CDC is not the proper way to get help. CDC is not a hospital or clinical facility; we do not see patients and are unable to diagnose your illness, provide treatment, prescribe medication, or refer you to specialists. Please see your health care provider or go to the nearest emergency room. We recommend that you view the CDC/DPD fact sheet on How to Find a Physician. This fact sheet has several links that might help you in locating a physician in your area.

If you would like information on parasitic diseases written for the public, please visit the DPDM website.

How to obtain health information:

Resources:

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DPDx is an educational resource designed for health professionals and laboratory scientists. For an overview including prevention, control, and treatment visit www.cdc.gov/parasites/.