Used primarily in the metric system, this prefix denotes a factor of 10â9 or 0.000000001. It is frequently encountered in science and electronics for prefixing units of time and length, such as 29 nanoseconds, 100 nanometres or in the case of electrical capacitance, 100 nanofarads.ano- (pref.). A prefix meaning one-billionth; as, a nanogram is one-thousandth of a microgram. nano- (pref.). Very small; submicroscopic; -- used to designate sizes smaller than those that would be referred to as micro-; as, nanoscale manipulations.
The normal range of estrogen varies depending upon the patient's age. Typically a women aged 20 to 29 will have an average level of 149 pg/ml (pictograms per milliliter). A female aged 30 to 39 will average a level of 210 pg/ml.
List of Normal Hormone Levels in Women Photo Credit Jupiterimages/Brand X Pictures/Getty Images. Hormones are substances produced by the body that have chemical effects on other parts of the body. Women produce hormones, such as estradiol, follicle stimulating hormone (FSH), luteinizing hormone (LH) and progesterone. Certain hormones rise at various times of the menstrual cycle and during pregnancy. Hormone levels also change at menopause. Estrogen is the predominant female hormone; estradiol is the predominant form of estrogen produced in the ovaries. Normal estrogen levels, according to Fertility Plus hormone charts, on days two to three of the menstrual cycle are 25 to 75 picograms per milliliter (pg/ml).