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M94A0724.TXT
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Document 0724
DOCN M94A0724
TI In-field assay monitoring of anti-HIV-1/HIV-2 EIAs in Australian Blood
Banks, 1992. Australian Red Cross Blood Transfusion Service
Laboratories.
DT 9412
AU Dax EM; Bendistinto M; Vandenbelt T; National HIV Reference Laboratory
(NRL), Fairfield Hospital,; Victoria, Australia.
SO Annu Conf Australas Soc HIV Med. 1993 Oct 28-30;5:111 (poster no. 72).
Unique Identifier : AIDSLINE ASHM5/94348931
AB OBJECTIVE: To examine the performance of 4 anti-HIV-1/HIV-2 enzyme
immunoassays (EIAs) in Australian Blood Banks during use. EIAs included:
Abbott Recombinant, Diagnostic Pasteur Genelavia MIXT, Genetic Systems
EIA and Organon Teknika. METHODS: Anti-HIV-1/HIV-2 EIAs were monitored
by collecting data from individual laboratories each month. The data
included number of specimens tested, number of specimens found to be
initially reactive, and repeatably reactive per week. Assay batch
numbers were also recorded. Data were relayed to the NRL as part of the
regular assay monitoring procedures used in the quality assurance
program in Australia. Initial (IRR) and repeat reactor rates (RRR) were
calculated for each assay and batch. Overall mean 'in-field'
specificities (Sp.) were calculated as 100-RRR% and compared with
evaluation specificities (Eval. Sp.) found during formal evaluation
using 5000 fresh donations for each assay. RESULTS: The Genetic Systems
EIA showed the least variation between batches (N = 4) while others
demonstrated 3-4 fold variation in RRR. The Organon and Pasteur batches
showed large variation between IRR and RRR, suggesting that these EIAs
are prone to technical error. (see table below) CONCLUSION: Three of the
HIV-1/HIV-2 EIAs demonstrated 'in-field' specificity within the
evaluation specificity range. TABULAR DATA, SEE ABSTRACT VOLUME.
DE Australia *Blood Banks *Blood Transfusion Human HIV
Infections/*PREVENTION & CONTROL/TRANSMISSION HIV-1/*ISOLATION & PURIF
HIV-2/*ISOLATION & PURIF *Immunoenzyme Techniques Mass Screening
Quality Control Red Cross MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).