Referred Tests
| Web: | mayocliniclabs.com |
|---|---|
| Email: | mcl@mayo.edu |
| Telephone: | 800-533-1710 |
| International: | +1 855-379-3115 |
| Values are valid only on day of printing. | |
Test ID: FFES
Estradiol Free, Serum (includes Estradiol and SHBG)
Reference Values 
Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.
Estradiol, Serum MS
Units: pg/mL
Age Range
Newborn
Levels are markedly elevated at birth and fall rapidly during the first week to prepubertal values of <15.
Males <6 m
Levels increase to 10 - 32 between 30 and 60 days, then decline to prepubertal levels of <15 by six months.
Females <1 y
Levels increase to 5.0 - 50 between 30 and 60 days, then decline to prepubertal levels of <15 during the first year.
Prepubertal <15
Adult Males 8.0 - 35
Adult Females
Follicular 30 - 100
Luteal 70 - 300
Postmenopausal <15
Free Estradiol, Percent
Units: %
Age Range
Adult Males 1.7 - 5.4
Adult Females 1.6 - 3.6
Free Estradiol, Serum
Units: pg/mL
Age Range
Adult Males 0.2 - 1.5
Adult Females 0.6 - 7.1
Sex Hormone Binding Globulin
Units: nmol/L
Age Range
Infants (1 - 23m) 60.0 - 252.0
Prepubertal 72.0 - 220.0
Pubertal
Males 16.0 - 100.0
Females 36.0 - 125.0
Adult Males
20 - 49 y 16.5 - 55.9
>49y 19.3 - 76.4
Adult Females
20 – 49y 24.6 - 122.0
>49y 17.3 - 125.0