Most supplements, fruits, vegetables, milk-derived proteins, and natural products carry some level of heavy metals, which can be very difficult to completely eliminate from the diet due to their uptake by plants from the surrounding air, water, and soil. Food and natural products are regulated in California by CA Prop 65, or "The Safe Drinking Water and Toxic Enforcement Act of 1986", which establishes "safe harbor levels" for a list of chemicals known to the state to potentially cause cancer or reproductive toxicity. Longevitylife abides by these stringent regulations and tests all products for the four main categories of Heavy Metals: Arsenic, Cadmium, Lead, and Mercury.

Our products are tested at third party accredited laboratories for over 500 pesticide residues using gas chromatography with tandem mass spectrometry.  We subject our elixirs to testing for the ubiquitous pesticide, glyphosate, as well as its breakdown product, AminoMethylPhosphonic Acid (AMPA), using liquid chromatography with tandem mass spectrometry.  This rigorous testing protocol ensures adherence to our strict quality standards.

To evaluate the survival of our probiotics, we test with a Simulator of the Human Intestinal Microbial Ecosystem —the closest system developed to model human digestion and the gut. It recreates the physiological conditions and biological processes (food uptake, peristalsis, digestive enzymes, pancreatic and bile acids, and time spent in each step) representative of the human gastrointestinal tract.

Heat typically injures or kills living probiotics, but the selection of probiotic strains and the delivery system that carries them (think: capsules, powders, liquid fill) each respond differently to varying levels of heat exposure. We've tested our strains the packaging and worst-case scenario heat conditions that we could potentially encounter on its way to our customers.

Even after 10 days of constant, 24 hour, 100º F exposure, which is very unlikely even in the heat of summer, our probiotic bacteria counts and viability exceeded the living cell counts (AFU) stated on our label.

Only with constant exposure to blazing temperatures of 120ºF—continuously over 48 hours—did the total biopotency dip below label claim numbers and requirements.