Saliva Profile I – E2, Pg, T, DS & Cx1

SALIVA TESTING

Saliva testing is a non-invasive collection method where patients collect their saliva in plastic tubes in order to measure hormones like cortisol, estrogens, progesterone, and androgens. This non-invasive saliva collection is ideal for patients because it allows them to collect their sample in the privacy of their home or office.

Steroid hormones in the bloodstream are 95-99% bound to carrier proteins, and in this form are unavailable to target tissues. Saliva testing measures the amount of hormone available to target tissues – the bioavailable amount. For this reason, saliva testing better relates to specific symptoms of excess or deficiency, and is a good option for monitoring hormone therapy.

Some analytes cannot be tested using immunoassays, the methodology used for most of our saliva testing. For that reason, ZRT developed LC-MS Saliva Steroid Profiles using liquid chromatography/tandem mass spectrometry (LC-MS/MS). These profile tests a broad range of bioavailable hormones and hormone metabolites in one convenient saliva sample collection. LC-MS testing allows for accurate reporting of estrogens down to extremely low levels, such as those seen in men, children, and people using aromatase inhibitors, and includes a test for ethinyl estradiol, 3 hormone blockers, and melatonin. 

ZRT is one of the first labs to measure hormones in saliva and helped establish the method that made saliva hormone testing commercially viable for health care providers and patients around the globe.