Estradiol

ChemistryAlso known as: 17β-EstradiolAlso known as: E2pg/mL

Measures estradiol hormone levels in saliva.

Normal Range
0.1 – 1.5 pg/mL
pg/mL
Abnormal Levels
< 10 pg/mL
> 30 pg/mL
Specimen Type
Blood

Why This Biomarker Matters

Estradiol balance is crucial for bone health, mood, sexual function, and cardiovascular health. Salivary testing provides insight into active hormone levels and helps optimize hormone therapy or identify imbalances.

Understanding Your Results

Normal Range

0.1 – 1.5 pg/mL

Optimal Ranges

Clinician-defined 4-point reference thresholds (pg/mL)

male — Default Range

10
10
30
30
Low
10 pg/mL
Borderline Low
10 pg/mL
Optimal
30 pg/mL
Borderline High
30 pg/mL

Overview

Estradiol is the primary estrogen hormone in the body, measured through saliva. Salivary estradiol reflects biologically active hormone levels and is useful for tracking hormonal changes throughout the menstrual cycle, during perimenopause, or with hormone therapy. Abnormal estradiol levels can affect mood, bone health, sexual function, and cardiovascular risk. This non-invasive test helps assess hormone balance and guide treatment decisions.

Related Health Conditions

Conditions where Estradiol is commonly tested

Technical Information (LOINC Codes)

Standardized laboratory codes for this biomarker

2243-4Primary
Estradiol (E2) [Mass/volume] in Serum or Plasma
pg/mL
35384-7
Estradiol (E2) [Mass/volume] in Serum or Plasma by High sensitivity method
pg/mL
2238-4
Estradiol (E2) [Mass/volume] in Saliva (oral fluid)
pg/mL
14715-7
Estradiol (E2) [Moles/volume] in Serum or Plasma
pmol/L
83096-8
Estradiol (E2) [Mass/volume] in Serum or Plasma by Immunoassay
pg/mL
31176-1
Estradiol (E2) [Mass/volume] in Amniotic fluid
pg/mL
34286-5
Estradiol (E2) [Moles/volume] in Urine
pmol/L
34287-3
Estradiol (E2) [Moles/volume] in 24 hour Urine
pmol/L
55857-7
Estradiol (E2) [Mass/volume] in Body fluid
pg/mL
55858-5
Estradiol (E2) [Moles/volume] in Body fluid
pmol/L
72873-3
Estradiol (E2) [Moles/volume] in Serum or Plasma by High sensitivity method
pmol/L
83097-6
Estradiol (E2) [Moles/volume] in Serum or Plasma by Immunoassay
pmol/L
97741-3
Estradiol (E2) [Moles/volume] in Aspirate
nmol/L
12595-5
Estradiol (E2) [Mass/volume] in Urine
pg/mL
97742-1
Estradiol (E2) [Mass/volume] in Aspirate
pg/mL
21263-9
Estradiol (E2) [Mass/time] in 24 hour Urine
ng/(24.h)
2239-2
Estradiol (E2) [Mass/volume] in Semen
pg/mL
2245-9
Estradiol (E2) [Moles/mass] in Tissue
umol/g
25401-1
Estradiol (E2) [Moles/time] in 24 hour Urine
nmol/(24.h)