Saliva Hormone Test Kit photo

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Saliva Hormone Test Kit

Good basic assessment of sex steroid and adrenal hormones collected in the morning when levels should be at their peak. Five (5) Tests: Estradiol (E2), Progesterone (Pg), Testosterone (T), DHEA-S, and Cortisol (C1) up to 4x daily.

  • Comprehensive Hormone Insight: Measures key reproductive hormones plus adrenal function in one complete panel.
  • 4-Point Cortisol Rhythm Testing: Tracks cortisol levels throughout the day for a detailed stress and energy profile.
  • Convenient At-Home Collection: Simple, non-invasive saliva testing backed by trusted ZRT laboratory accuracy.

Saliva testing measures the hormones that are bioavailable at the tissue, available for absorption so they can create a hormonal response.

Blood (serum) testing measures the total level of a specific hormone in the bloodstream, not the bioavailable level. Hormones are partially bound to a protein as they travel through the bloodstream, and are not free to reach the tissue and create a hormonal response.

*It is very important to measure the amount that is bioavailable.

Serum vs. Saliva:

“With saliva measuring the bioavailable (non-protein-bound) fraction of circulating hormones that can freely diffuse into tissues, it provides a more accurate assessment of topical hormone supplementation than serum. Serum levels do not rise significantly after topical dosing. By contrast, saliva levels do — reflecting tissue delivery of the topically delivered hormone.”

Source: Accurate Hormone Testing for Different Supplementation Types