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1994-10-25
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Document 2730
DOCN M94A2730
TI Clinical evaluation of an automated assay (Vidas, Biomerieux) for
determination of p24 antigenemia.
DT 9412
AU Barin F; Buzelay L; Vernet G; Goudeau A; Laboratoire de Virologie, CHRU
Bretonneau, Tours, France.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):238 (abstract no. PB0381). Unique
Identifier : AIDSLINE ICA10/94369845
AB OBJECTIVE: To evaluate the sensitivity and specificity of a new
automated assay for determination of HIV1 p24 antigenemia. METHODS: The
VIDAS assay was evaluated by comparison to 2 licensed p24 assays
(HIVAG-1, Abbott, and Vironostika HIV1-Ag, Organon). The sensitivity was
studied on 1) a panel of 28 samples from the Societe Nationale de
Transfusion Sanguine (SNTS), 2) serial dilutions of the WHO standard
HIV1 preparation, and 3) 170 consecutive samples from HIV1 seropositive
individuals adressed to our clinical virology laboratory. Specificity is
being tested on samples from HIV1 seronegative blood donors. RESULTS AND
DISCUSSION: The limits of HIV1 Ag detection were 10-15 pg/ml, 20-25
pg/ml and 35-40 pg/ml for Vironostika HIV1 Ag, Vidas, and HIVAG-1,
respectively, when using the WHO HIV1 preparation. The Vidas and
Vironostika assays gave similar data on the SNTS panel, whereas 2 weakly
positive samples (20-25 pg/ml) detected by these 2 assays were negative
by HIVAG-1. First data on the 170 clinical samples indicate that the
sensitivities of Vidas, Vironostika, and HIVAG-1 were 89.6%, 85.1%, and
74.6%, respectively. Specificity studies will be available for
presentation.
DE AIDS Serodiagnosis/*INSTRUMENTATION Blood Banks *Blood Donors
Comparative Study France Human HIV Core Protein p24/*IMMUNOLOGY HIV
Seronegativity/IMMUNOLOGY HIV Seropositivity/*DIAGNOSIS/IMMUNOLOGY
HIV-1/*IMMUNOLOGY Predictive Value of Tests Reproducibility of Results
MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).