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The page below is a sample from the LabCE course
Parasitology Case Studies: Protozoa in Blood (by ASCLS)
. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.
Learn more about Parasitology Case Studies: Protozoa in Blood (by ASCLS) (online CE course)
Laboratory Diagnosis
Microscopic examination of thick and thin blood smears stained with Giemsa or Wright stain
Typically
Babesia
is seen in patients whose CBC that has increased monocytes and decreased platelets
Very low levels of parasitemia may be detected by IFA or PCR
Microscopy
Blood smears show multiple rings per RBC
Rings are smaller and more pleomorphic that malaria
If confused with malaria, usually called
P. falciparum
May form single rings, and doublets (rabbit ears) and tetrads as they mature,
No other stages of parasites are found in smears
CDC/ Dr. George Healy
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