关键点：Teststripshowstwobarsbutbloodtestshowsnopregnancymaybeduetoectopicpregnancy,hydatidiformmole,biochemicalpregnancy,orsubstandardteststrip.
一、Ectopicpregnancy:Usually,aftersuccessfulfertilizationofspermandegg,afertilizedeggisformed,andthisfertilizedeggneedstotravelthroughthefallopiantubetotheuterinecavityandimplanttheretodevelophealthilyandformanembryo.However,ifduringthetravelingprocess,thefertilizedeggimplantsatotherpartsoutsidetheuterinecavity.
1.Thisisanabnormalsituationwherethepregnancyoccursinalocationotherthantheuterinecavity.
二、Hydatidiformmole:Itisalsoakindofectopicpregnancy,mainlyreferringtotheabnormalproliferationofvillustrophoblastcells.Afterthesecellsproliferateabnormally,theywillformblistersofdifferentsizesandconnectinseries.Whenexamined,itfeelslikegrapes,soitiscalledahydatidiformmole.
1.Whenabloodtestisconducted,itwillbefoundthatthehormonelevelishigherthanthatintheearlystageofpregnancy,andtheearlypregnancyreactionwillbemoresevere.
三、Biochemicalpregnancy:Itmeansthatafterthecombinationofspermandegg,itdoesnotimplantintheuterinecavityorotherorgansandflowsoutnaturally.Inthisprocess,thehormonelevelwillriseonce,andtherewillalsobetwobars.
1.Itisasituationwherethepregnancyfailstoprogressnormally.
四、Substandardteststrip:Errorsintheprocedurewhenconductingtheurinepregnancytestorfactorssuchastoolongreadingtimeoftheurinepregnancytestresultcanallleadtoinaccurateurinepregnancytestresults.
1.Thequalityoftheteststripcansignificantlyaffecttheaccuracyofthetest.
Inconclusion,whenjudgingwhetherthereispregnancyornot,theresultsofbloodchorionicgonadotropinandprogesteronetestsarethemaincriteria.Ifitisanormalpregnancy,whentheurinepregnancytestispositive,thebloodHCGmustbedetectable,andthelevelofbloodHCGwillbeveryhigh.