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As of 2/24/2022, the following test orders have resumed:

  • CDC-10458: Chagas Disease Serology
  • CDC-10234: Parasites: Morphologic Identification
  • CDC-10520: Malaria: Morphological Identification

Pre-approval prior to submissions will be required. Please contact dpdx@cdc.gov for 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.

The standard method for diagnosing the presence of hookworm is by identifying hookworm eggs in a stool sample using a microscope. Because eggs may be difficult to find in light infections, a concentration procedure is recommended.
Related Links

For more information about laboratory diagnosis of hookworm, see the DPDx website:

Page last reviewed: March 16, 2022