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1994-09-05
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Document 0826
DOCN M9480826
TI Evaluation of the MicroTrak II HIV-1/HIV-2 recombinant antigen enzyme
immunoassay.
DT 9410
AU Kline R; Newhouse R; Granade T; Phillips S; Moss M; Quinn TC; Johns
Hopkins Univ., Baltimore, MD.
SO Abstr Gen Meet Am Soc Microbiol. 1994;94:622 (abstract no. V-28). Unique
Identifier : AIDSLINE ASM94/94313119
AB In a study, the reliability, sensitivity, and specificity of the
MicroTrak II HIV-1/HIV-2 EIA (MT II) were compared to licensed EIAs and
Western Blot (WB). 2490 sera from various populations in the US, Africa,
and India were evaluated at 3 different sites using the MT II and
licensed HIV-1/HIV-2 EIAs (Genetic Systems or Abbott). All repeatedly
reactive sera were reconfirmed by WB for HIV-1. Sera that were
indeterminate by WB, had discrepant results, or were previously known to
be HIV-2 positive were retested using a licensed HIV-2 EIA (Genetic
Systems). All reactive samples were confirmed by HIV-2 WB. Discrepant
samples were also tested using a peptide assay (Select HIV). Final
interpretation of serological results was primarily based on WB and, in
some cases, RIPA, PCR, and culture. WB and other confirmatory testing
identified 910 HIV-1/HIV-2 positive samples and 1580 HIV-1/HIV-2
negative samples. MT II detected all 910 positive samples for a
sensitivity of 100% and the licensed HIV-1/HIV-2 EIAs detected 904
positive samples for a sensitivity of 99.3%. MT II characterized 1574
negative samples as negative for a specificity of 99.6% and the licensed
EIAs detected 1565 negative samples as negative for a specificity of
99.1%. The 6 false positives by MT II were all sera from Africa. The
MicroTrak II HIV-1/HIV-2 EIA is a reliable assay that has a slightly
higher sensitivity and specificity compared to other licensed EIAs.
DE Africa Blotting, Western/METHODS Comparative Study False Positive
Reactions Human HIV Antigens/*BLOOD HIV
Seropositivity/BLOOD/*DIAGNOSIS HIV-1/*ISOLATION & PURIF
HIV-2/*ISOLATION & PURIF *Immunoenzyme Techniques India Predictive
Value of Tests Sensitivity and Specificity United States MEETING
ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).