Time Sensitive

Ordering Recommendation

Screen for and detect spirochetes and blood parasites, including microfilaria, Babesia, Trypanosoma and Plasmodium species. Patient's travel history is necessary to aid in test interpretation.

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation

Lavender (EDTA) or pink (K2EDTA).

Specimen Preparation

Transport 5 mL whole blood (Min: 1 mL). Extended exposure to EDTA anticoagulants can result in altered parasite morphology. For best results, send 5 thin blood smears (unstained, unfixed) AND 5 thick smears (unstained, unfixed) in addition to whole blood. Thin and thick blood smears should be prepared immediately or within 1 hour after collection.
Thin smears are made as per routine hematology differentials. Thick smears are made by dropping 10 to 20 µL of blood onto a slide and spreading it into a dime-sized area with a glass, wooden, or plastic applicator.
For instructions on preparation of thick and thin smears, see https://www.cdc.gov/dpdx/diagnosticProcedures/blood/specimenproc.html
Label and transport slides in slide holders. Specimen must be received within 24 hours of collection.
Regional clients MUST submit 5 thin blood smears and 5 thick smears in addition to whole blood.

Storage/Transport Temperature

Room Temperature.

Unacceptable Conditions

Whole blood in anticoagulants other than EDTA or K2EDTA.


Rapid diagnosis of malaria is critical for appropriate patient management. Specimens for Malaria and Babesia are for confirmation only from clients outside of the immediate Salt Lake City, Utah area. Travel history required.


Whole blood: Ambient: 24 hours; Refrigerated: Unacceptable; Frozen: Unacceptable
Slides: Ambient: 1 week; Refrigerated: Unacceptable; Frozen: Unacceptable






1-2 days

Reference Interval


Interpretive Data

Compliance Category



Hotline History


CPT Codes



Component Test Code* Component Chart Name LOINC
0049025 Parasites Smear (Giemsa Stain), Blood 51714-4
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.


  • Babesia
  • Blood parasites detection
  • Giemsa Stain for Malaria
  • Loa Loa Smear
  • Malaria Smear (Giemsa Stain)
  • Malaria/Babesia Smear
  • Microfilarial Smear
  • Microfiliariae detection
  • Plasmodium Smear
  • Trypanosome
  • Wuchereria Smear
  • Wucheria bancrofti
Parasites Smear (Giemsa Stain), Blood