Why should I test in saliva and not in blood? Is saliva testing accurate?

AYUMETRIX uses the most advanced testing technologies and FDA approved kits, which offer accuracy, validity and convenience over conventional blood tests for the following reasons:

 Stress-free
 Noninvasive (no needles)
 More convenient than blood testing for health care provider and patient
 Measures the “unbound” biologically active or free hormone levels
 Ideal for measuring and accurately monitoring transdermal application of hormones
 Optimized for multiple collections any time of day/month, any place
 No special processing (eg, centrifugation, ice-packs) prior to shipment
 Hormones stable in saliva for weeks
 Ideal for evaluating cortisol secretion patterns, and balance and flow of estrogens and progesterone.
 Salivary estriol can be tested to identify women at risk for preterm labor: It spikes approximately two weeks prior to the onset of labor
 Convenient shipment