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Test Name:
Giardia lamblia Antibody, by IFA
- SBMF No:
44544 - Performance Lab Name:
Focus Diagnostics - Test Mnemonic:
GIARDIA AB - ABN:
Not required - CPT Code:
86674 - LOINC Code:
9524-0 - Ref Lab Test No:
40500 (ARUP# 0099439) - Spec Type:
Serum - Spec Container:
Gold top (SST) or red top (serum) tube - Pref Vol:
1.0 mL - Min Vol:
0.25 mL - Fasting:
No - Spec Collect:
Routine venipuncture - Spec Process:
Clot 30 minutes
Promptly centrifuge 15 minutes
Immediately transfer serum to separate plastic tube - Spec Store Transport:
Refrigerated - Spec Stability:
1 week room temperature (20-30°C)
2 months refrigerated (2-8°C)
3 years frozen (-20°C) – Do not use frost-free units that undergo repeated freeze/thaw cycles - Methodology:
Immunofluorescence Assay (IFA) - Use:
Diagnose Giardia as etiology of chronic diarrhea after 1-2 weeks of disease - Clinical Significance:
A polyvalent conjugate (recognizing IgG, IgM, and IgA) is used to detect the presence of antibodies to Giardia lamblia. A four-fold or greater increase in titer between acute and convalescent sera indicates an acute active phase. A single positive reaction represents previous exposure, since antibody titers are known to remain high for at least six months. - Reference Range:
<1:16 - Additional Test Info:
This test is referred through ARUP Laboratories - Day Run:
Varies - Test Type:
INFECTIOUS ANTIBODY
