Enzyme-linked immunosorbent assay for the detection of anti-Giardia specific immunoglobulin G in filter paper blood samples.
Trans R Soc Trop Med Hyg
; 87(1): 36-8, 1993.
Article
en En
| MEDLINE
| ID: mdl-8465391
ABSTRACT
Conventional diagnosis of infection with Giardia duodenalis is by faecal examination but the sensitivity of a single examination is low. Serological tests, although not always positive, are more acceptable to patients and are useful in determining the prevalence of giardiasis in large populations. We show here that blood collected on filter paper and dried provides an excellent source of material for enzyme-linked immunosorbent assays; using samples from a group of 88 stool-negative and 45 positive patients, the optimum results were obtained by taking the control mean optical density plus one standard deviation as the negative/positive cut-off value. The sensitivity was 91% (2/45 false negatives), and the specificity 95% (4/88 false positives). This method should be particularly useful for large-scale surveys in developing countries or wherever serological testing is done in central laboratories.
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Bases de datos:
MEDLINE
Asunto principal:
Inmunoglobulina G
/
Ensayo de Inmunoadsorción Enzimática
/
Anticuerpos Antiprotozoarios
/
Giardiasis
/
Giardia lamblia
/
Parasitosis Intestinales
Tipo de estudio:
Diagnostic_studies
/
Risk_factors_studies
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Trans R Soc Trop Med Hyg
Año:
1993
Tipo del documento:
Article
País de afiliación:
Arabia Saudita