Estradiol, Serum (Estrogen Fraction)

Adult: Female:
Follicular phase: 20–150 pg/mL;
Midcycle phase:100–500 pg/mL;
Luteal phase: 60–260 pg/mL;
Pregnancy: 1st tri: 1–5ng/mL; 2nd tri: 5–15 ng/mL; 3rd tri: 10–40 ng/mL;
Postmenopause:<30 pg/mL. Male: 15–50 pg/mL

. Red-top tube.
■ An estrogen fraction useful in evaluating fetal well-being,
menstrual and fertility problems in women, precocious puberty
in girls, gynecomastia.
■ Used to assess amenorrhea to determine if cause is menopause,
pregnancy, or a medical problem.
■ Serial measurements are used to monitor follicle development in
the ovary prior to in vitro fertilization.
■ Estrone, the major estrogen after menopause, and estriol, the
major estrogen in pregnant women, are the other major
estrogens.