Description
Estradiol is a type of hormone called estrogen.
This test can be used for conditions suspected such as amenorrhea, early puberty or hypogonadism.
The following are possible reasons why this test may be done:
• Absent or decreased secretion of sex hormones
• Cancer
• Early-onset puberty
• Finding of ovulation
• Hypothalamic amenorrhea
• Polycystic ovaries
Its concentration is measured by means of analysis of a blood sample drawn from the vein in the arm.
Purpose of the test
This test measures the amount of estradiol in blood
If you are a menstruating female, you may be asked to provide the day of your menstrual cycle when this test is performed.
Reference range values
Estradiol, Serum pg/mL (SI: pmol/L = 3.67 x pg/mL)
Male >=16yrs <20 – 56
Female:
Untreated postmenopausal <20 – 30
Treated postmenopausal <20 – 93
Oral Contraceptives <20 – 102
Follicular Phase <20 – 160
Follicular Phase 2-3 days <20 – 84
Periovulatory phase ±3 days 34 – 400
Luteal phase 27 – 246
Abnormal findings
• Increased results appear with:
o Obesity
o Hyperthyroidism
o Liver disease
o Gynecomastia
o Precocious puberty
• Decresed results appear with:
o Vegetarianism
o Turner's Syndrome
o Menopause