Malaria Species Identification by PCR
Ordering Recommendation
Not a first-line test for diagnosis of acute symptomatic malaria. Refer to Parasites Smear (Giemsa Stain), Blood (0049025) or Malaria, Rapid Screen and Giemsa Stain (2001547). May be used in accordance with CDC recommendations for asymptomatic or subclinical malaria screening of sub-Saharan African refugees.
New York DOH Approval Status
Specimen Required
Lavender (EDTA) or pink (K2EDTA).
Transport 1 mL whole blood. (Min: 0.5 mL)
Refrigerated.
Heparinized specimens.
Ambient: 24 hours; Refrigerated: 1 week; Frozen: 1 week
Methodology
Qualitative Polymerase Chain Reaction (PCR)
Performed
Sun-Sat
Reported
1-3 days
Reference Interval
Interpretive Data
Acute, symptomatic malaria: This qualitative test is intended only for the species identification of microscopically confirmed malaria infections. It is not intended to monitor treatment response or parasite clearance.
A positive result may be obtained in the absence of visible parasites. In coinfections with two or more Plasmodium species, differences in parasite burden may lead to failure of one or more species to be identified.
Asymptomatic/subclinical malaria: PCR is recommended by the CDC as the most sensitive laboratory test for detection of asymptomatic or subclinical malaria in refugee screening programs. PCR is only recommended for routine screening of refugees from sub-Saharan Africa who have not received predeparture therapy.
A negative result on this assay does not rule out the presence of PCR inhibitors in the patient specimen or assay-specific nucleic acid in concentrations below the level of detection by the assay.
Laboratory Developed Test (LDT)
Note
Hotline History
CPT Codes
87798 x5
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
2004964 | Malaria by PCR, P. falciparum | 41447-4 |
2004966 | Malaria by PCR, P. knowlesi | 70568-1 |
2004968 | Malaria by PCR, P. vivax | 41450-8 |
2004970 | Malaria by PCR, P. malariae | 41448-2 |
2004972 | Malaria by PCR, P. ovale | 41449-0 |
Aliases
- Plasmodium falciparum
- Plasmodium knowlesi
- Plasmodium malariae
- Plasmodium ovale
- Plasmodium vivax