Accessible self testing for VitD3 and major hormone groups. FYI, at;
"ZRT Laboratory’s state-of-the-art saliva and blood spot testing technology allows for accurate measurement of a broad array of hormones and detection of existing hormone imbalance.
Saliva Testing - Convenient home collection, accurate, and inexpensive, Saliva Testing provides a true picture of the bioavailable levels of steroid hormones.
Blood Spot Testing - Blood Spot Testing offers an easy, finger-stick alternative to blood draws in the doctor’s office.
Combination Saliva and Blood Spot - Combines both Saliva and Blood Spot test materials in an all-in-one test kit for easy home collection of the major hormone groups— reproductive, adrenal, and thyroid – on the same day at the optimal time."