Reproducibility of plasma and urinary sex hormone levels in premenopausal women over a one-year period.
Michaud DS, Manson JE, Spiegelman D, Barbieri RL, Sepkovic DW, Bradlow HL, Hankinson SE. Reproducibility of plasma and urinary sex hormone levels in premenopausal women over a one-year period. Cancer Epidemiology Biomarkers & Prevention 1999, 8: 1059-64. PMID: 10613337.Peer-Reviewed Original ResearchConceptsPremenopausal womenIntraclass correlation coefficientLuteal phaseHormone levelsBlood samplesEndogenous sex steroid hormonesUrinary sex hormone levelsUrinary sex hormonesUrinary estrogen metabolitesSex hormone levelsSex steroid hormonesSets of bloodSingle blood sampleHigh intraclass correlation coefficientsLuteal phase samplesPlasma estrogenMenstrual cycleSex hormonesPlasma estradiolBreast cancerEstrogen metabolitesEstrone sulfateUrinary 2One-year periodSteroid hormones