Reference ValuesReference StandardsUltrasonography, PrenatalGestational AgeBlood Chemical AnalysisHematologic TestsThyrotropinThyroid Function TestsReproducibility of ResultsThyroxinePregnancyZolazepamTiletamineFetal HeartImmunoradiometric AssayChemistry, ClinicalSensitivity and SpecificityQuality ControlPregnancy Trimester, ThirdInfant, NewbornPregnancy Trimester, SecondHematologyBlood Flow VelocityFructosamineNasal BoneUltrasonography, DopplerAge FactorsCross-Sectional StudiesUmbilical ArteriesProspective StudiesUltrasonography, Doppler, PulsedDuctus ArteriosusMiddle Cerebral ArteryErythrocyte IndicesSex FactorsLaboratoriesPulsatile FlowClinical Enzyme TestsBiological MarkersHematocritReagent Kits, DiagnosticNephelometry and TurbidimetryFetusThyroid GlandLymphocyte SubsetsImmunoassayAgingCrown-Rump LengthHypothyroidismBlood Cell CountCD4-CD8 RatioAutoanalysisBody HeightUltrasonography, Doppler, ColorRadioimmunoassayHemoglobinsPregnancy Trimester, FirstLinear ModelsTriiodothyronineAlkaline PhosphataseSex CharacteristicsInfant, PrematureBiometryHyperthyroidismgamma-GlutamyltransferaseObserver VariationRegression AnalysisSpirometryStatistics, NonparametricRetrospective StudiesCreatinineFetal Growth RetardationBlood DonorsHypopituitarismAlanine TransaminaseErythrocyte CountLiver Function TestsSerum AlbuminIodineVitamin B 12SingaporeCerebral VentriclesIodide PeroxidaseAspartate AminotransferasesAsian Continental Ancestry GroupTime FactorsCreatine KinasePredictive Value of TestsFetal DevelopmentDog DiseasesElectrolytesChinaBilirubinTestosteroneVitamin B 12 DeficiencyLymphocyte CountFetal BloodRisk FactorsDown SyndromeBody Weight