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GenWay/Toxoplasma gondii IgG Avidity Test/GWB-431F90/1x96 Assays
免费咨询热线
4000-520-616
Description:
ProductName | ToxoplasmagondiiIgGAvidityTest. |
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#ofSamples | 1x96Assays. |
IntendedUse | TheToxoplasmagondiiIgGaviditytestisintendedtodifferentiatebetweenpastandacuteinfection. |
Introduction | Theaviditydeterminationisadiagnosticmethodwhichisusedtodifferentiatearecent(acute)andamoredistant(past)infectionwithToxoplasmagondiiinpatientsera.Avidityisthebindingforceoftheantibody(serumspecimen)withthecorrespondingantigen. LowavidIgGantibodiesintheearlystageofinfectioncanbedifferentiatedfromhighavidantibodiesassociatedwithapastinfection. ThedeterminationofIgGantibodyavidityisanadditionalanalysistotheclassicSEROlogyinregardtothestatusofaToxoplasmagondiiinfection. |
Principlesoftheassay | MicrotiterstripwellscoatedwithToxoplasmaantigenareincubatedwithdilutedserumspecimen(dualpipetting).Afterwashingonewellisincubatedwithavidityreagentandthecorrespondingwellwithwashingbuffer.Inthisstepthelowavidityantibodiesareremovedfromtheantigenswhereasthehighavidityonesarestillboundtothespecificantigens. AntihumanIgGlabelledwithperoxidaseisadded.TheimmuncomplexisvisualizedwithTMBtogiveabluereactionproduct.Stopsolutionisaddedtostopthereactionandchangingthecolourofthereactionproductintoyellow.Absorbanceat450nmisreadusinganELISAmicrowellplatereader. |
StorageandStABIlity | Thereagentsarestableuptotheexpirydatestatedonthelabelwhenstoredat2-8°C. Afterfirstopeningthereagentsarestableuptotheexpirydate. |
LimitationsoftheTest | Bacterialcontaminationorrepeatedfreeze-thawcyclesofthespecimenmayaffecttheabsorbancevalues.Diagnosisofaninfectiousdiseaseshouldnotbeestablishedonthebasisofasingletestresult.Aprecisediagnosisshouldtakeintoconsiderationclinicalhistory,symptomatologyaswellasserologicaldata. Inimmunocompromizedpatientsandnewbornsserologicaldataonlyhaverestrictedvalue. Aresultofhighaviditycannotexcludethepossibilityofarecentinfection. |
References | M.H.Beaman,R.E.McCabe,S-Y.Wong,J.S.Remington,Toxoplasmagondii,Inc:PrinciplesandPracticeofInfectiousDiseases,G.L.Mandell,J.E.Bennet,R.Dolin,eds.,ChurchillLivingstonePubl.,Fourthedition,p.2455-2475(1995)KatalinN.Horvath,ZsuzsannaSzenasi,JozsefDankaandIstvanKucsera:ActaParasitologica,,50(3),p.255260(2005)K.Janitschke,J.LabMed,29(6),p.439-445(2005)HedmanK.,LappalainenM.,SeppalaI.,RecentprimaryToxoplasmosainfectionindicatedbyalowavidityspecificIgG,J.Infect.Dis.159,p.736740(1989)Joynson,DHM,PayneRA,RawalBK,PotencialroleofIgGavidityfordiagnosingToxoplasmosis,J.Clin.Pathol.43,p:1032-1033(1990) |
AdditionalInformation:
Name | ToxoplasmagondiiIgGAvidityTest |
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RelatedProductNames | ToxoplasmagondiiIgGAvidityTest |
MolecularWeight | 0.5 |
Storage | Thereagentsarestableuptotheexpirydatestatedonthelabelwhenstoredat+2...+8°C. Afterfirstopeningthereagentsarestableuptotheexpirydate. |
IntendedUse | ResearchUseOnly |