产品说明
Kitsize12x8MethodELISAIncubationtime1x1h,1x35min.,1x30min.Standardrange12-154pmol/LSpecimen/Volumes100µLserumSubstrate/isotopePNPP405nmRegulatoryStatus:EU:CEDetailsfor: Active-B12(holotranscobalamin)ELISAEarlyandaccuratemeasurementofVitaminB12deficiencyisessentialforpreventingtheoccurrenceofirreversIBLeneurologicaldysfunction.IBLInternationalofferstheActive-B12(holotranscobalamin)ELISAformeasuringVitaminB12whichisboundtotranscobalamin(TC),theonlyBIOLOGicallyactivefractionthatcanbedeliveredtocells.Lessthan30%ofthetotalVitaminB12inplasmacirculatesasActive-B12(HoloTC).Theremaining70%areboundtohaptocorrin(HoloHC).BecausechangesinHoloTClevelsoccurearlierthanTotal-B12inVitaminB12depletion,itconstitutesafasterwaytoproveVitaminB12deficiency.IndependentclinicalstudiesshowtheimprovedclinicaldiagnosticvalueobtainedwithmeasuringActive-B12comparedtoassessingtheTotalPlasmaVitaminB12concentration.TheActive-B12(holotranscobalamin)ELISAdoesnotrequirepre-analyticalsteps,whichisthemainsourceoflaboratoryvariation.ImproveddiagnosisofVitaminB12deficiencyAnindependentstudyshowedthatActive-B12(HoloTC)isamoresensitiveandmorespecificbioMarkerforassessingVitaminB12deficiencythanTotal-B12andMethylmalonicAcid(MMA).BiomarkerAreaunderthecurveSensitivitySpecificityActive-B12(HoloTC)0.89955%96%Total-B120.80146%88%Methylmalonsäure(MMA)
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