Estriol (E3)


This blood test is used to measure Estriol (E3) levels. Estriol is the major estrogen in the pregnant female and is produced by the placenta. Estriol helps to thicken and humidify mucous membranes in the vagina, bladder and eyes, making them more resilient against infections. Estriol plays an important role in supporting the immune system and has neuroprotective properties.

Estriol increases the ability of white blood cells to destroy viruses, bacteria and cancer cells. Estrogen’s role in supporting health and well-being is as significant as it is diverse. Endocrine disruptors such as heavy metals and environmental toxins, processed foods and chronic stress may contribute to an imbalance of the natural production of estrogen, to include estriol.

Test Preparation For Optimal Results:

If possible, have the lab collected early in the morning or shortly after waking. For comparison purposes, have subsequent labs collected close to the same time.

Disclaimer: A health care provider should evaluate a deviation from normal.