Estradiol, follicular phase — lab reference
In the reference guideRanges vary across the follicular phase and by assay.
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What’s searchable?Ranges vary across the follicular phase and by assay.
Interpret with cycle timing and ovulation status.
Female cycle-phase detail is on the next section. LC-MS/MS is preferred at low concentrations.
Interpret with estradiol, age, and cycle day.
Interpret with testosterone or estradiol, FSH, cycle phase, and pituitary context.
Method-dependent; LC-MS/MS is preferred at very low values.
Cycle day and exogenous progesterone timing matter.
Interpret with cycle day and symptoms.
Interpret with age, ovarian status, testosterone/estradiol, and pituitary context.
Female follicular <80; luteal <285; postmeno <51. Morning timing and stimulation testing may be needed.
Negative acute-phase reactant; not a stand-alone nutrition marker.
Negative acute-phase reactant; affected by liver function and nutrition.
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