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Babesia microti Antibodies (IgG & IgM)

Item Value
Approval req'd? No
Available Stat? No
Test code BABES
Performed by Focus via Quest
Sendout? Yes
Method Immunofluorescence assay
Container type Red top (Gold top NOT acceptable)
Amount to Collect 2 mL blood
Sample type Serum
Preferred volume 1 mL serum
Min. Volume 0.1 mL serum
UCSF Rejection Criteria Sample collected in Gold top
Processing notes Refrigerate sample. Order Quest # 34300
Units titer
Normal range
Babesia Ab IgG < 1:64 titer
babesia Ab IgM < 1:20 titer
Synonyms Babesiosis
Stability Room temperature 72 hours, refrigerated 1 week, frozen at -20C 1 month.
Turn around times Set up 5x per week. Turnaround time 4-6 days
Additional information Elevated antibody levels to B.microti indicate exposure to the organism. Human babesiosis infection is transmitted by the bite of an infected Ixodes tick or less frequently from transfusion with blood from an infected donor. Definitive diagnosis is made by identifying intraerythrocytic organisms in peripheral blood. In patients with low parasitemia, antibody detection by IFA is recommended. IgG levels greater than or equal to 1:1024 can be detected in acute phase patients with parasites in blood smears. The IFA assay can be used as a seroepidemiologic tool to study the frequency and distribution of B.microti in endemic areas especially in persons with mixed infections also involving Borrelia burgdorferi.

Human Babesia antibodies may persist for 6-12 months after acute illness, and may cross-react with malaria antibodies.
CPT coding 86753-90 x2
LOINC code 16427-7
Last Updated 10/28/2013 11:48:24 AM
Entry Number 84
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