| Description | TheThyroidPeroxidase(TPO)IgGELISAtestsystemisanenzymelinkedimmunosorbentassay(ELISA)forthedetectionofIgGclassantibodiestoThyroidPeroxidaseinhumanserumorplasma.Thyroidperoxidase(TPO),isthemajorautoantigen(933aminoacidresidue)inthethyroidmicrosomalantigen(TMA)particle.ThepurificationandpreparationofthisantigenhasmadetestingforTMAantibodiesobsolete.ELISAusingTPOrecombinantantigenisthemostpopularassay.DetectionofTPOantibodiesisstrongevidenceagainstagoiterornon-autoimmunecausesofhypothyroidism.Theannualriskforthedevelopmentofhypothyroidismis3%to4%peryearifTPOantibodiesarepresentandTSHiselevated.TPOantibodiesarepresentin8-9%normalcontrols,57-74%patientswithGravesdisease,99-100%ofHashimotodiseaseoridiopathicmyxedema,19%withdifferentiatedthyroidcancer,nopatientswithsubacutethyroiditisand11%ofthosewithothermiscellaneousnon-autoimmunethyroiddiseases.TheprevalenceofpositiveTPOantibodiesishigherinelderly(meanage80years)women(10%)comparedtoelderlymen(2%).Autoantibodyconcentrationincentenariansalsodecreases.StudiesofTPOepitopesineachdomain,AandB,anddetectionoftheirspecificautoantibodiessuggestthattheepitope-specificTPOantibodiesratio(A/B)doesnotchangeovertimeinindividualpatientsandthatTPOepitopeautoantibodypatternsmaybeinherited. |
|---|---|
| Species | Human |
| SampleType | SerumorPlasma |
| Name | ThyroidPeroxidase(TPO)IgGELISA |
|---|---|
| ShortDescription | TheThyroidPeroxidase(TPO)IgGELISAtestsystemisanenzymelinkedimmunosorbentassay(ELISA)forthedetectionofIgGclassantibodiestoThyroidPeroxidaseinhumanserumorplasma.Thyroidperoxidase(TPO),isthemajorautoantigen(933aminoacidresidue)inthethyroidmicrosomalantigen(TMA)particle.ThepurificationandpreparationofthisantigenhasmadetestingforTMAantibodiesobsolete.ELISAusingTPOrecombinantantigenisthemostpopularassay.DetectionofTPOantibodiesisstrongevidenceagainstagoiterornon-autoimmunecausesofhypothyroidism.Theannualriskforthedevelopmentofhypothyroidismis3%to4%peryearifTPOantibodiesarepresentandTSHiselevated.TPOantibodiesarepresentin8-9%normalcontrols,57-74%patientswithGravesdisease,99-100%ofHashimotodiseaseoridiopathicmyxedema,19%withdifferentiatedthyroidcancer,nopatientswithsubacutethyroiditisand11%ofthosewithothermiscellaneousnon-autoimmunethyroiddiseases.TheprevalenceofpositiveTPOantibodiesishigherinelderly(meanage80years)women(10%)comparedtoelderlymen(2%).Autoantibodyconcentrationincentenariansalsodecreases.StudiesofTPOepitopesineachdomain,AandB,anddetectionoftheirspecificautoantibodiessuggestthattheepitope-specificTPOantibodiesratio(A/B)doesnotchangeovertimeinindividualpatientsandthatTPOepitopeautoantibodypatternsmaybeinherited. |
| Reactivity | Human |