Parasite Examination, Whole Blood
Also known as: Loa loa Smear, Plasmodium Smear, Wuchereria Smear, Blood Smear for Parasites, Microfilarial Smear
Use
Establish the diagnosis of Plasmodium or other parasitic infection; diagnose malarial parasitic infestation of blood; evaluate febrile disease of unknown origin
Special Instructions
Release of trophozoites and RBC debris results in a febrile response, and periodicity of fever correlates with the type of malaria. Blood sampling is ideally done immediately upon onset of fever, as organisms are most likely to be detected just before it. In cases with strong clinical suspicion but negative by initial means, repeat testing at different times in the fever cycle may be necessary.
Limitations
A single negative result does not completely rule out parasitic infestation. For suspected protozoal, filarial, or trypanosomal infections, testing should be repeated at least three times with samples collected at different points in the fever cycle. Specific identification depends on the characteristics of the Plasmodium species affecting the infection.
Methodology
Other
Biomarkers
LOINC Codes
- 17784-0
- 17784-0
Result Turnaround Time
2-4 days
Related Documents
For more information, please review the documents below
Specimen
Whole Blood
Volume
3 to 5 mL
Minimum Volume
Not provided
Container
Glass slide, lavender-top (EDTA) tube
Collection Instructions
Air dry
Patient Preparation
Prepare sterile venipuncture site
Storage Instructions
Maintain EDTA whole blood specimen at room temperature for no longer than 24 to 48 hours.
Causes for Rejection
Specimen clotted; improper labeling
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 24 to 48 hours |
Other tests from different labs that may be relevant