Every product we sell is tested by an independent third-party lab before it goes on sale. We hold those reports, and you can have one.
The Certificate of Analysis is the lab's report on the product: what is in it, how much, and what is not in it.
What gets screened
- Identity and potency of every active ingredient, against the amount printed on the label
- Heavy metals — lead, arsenic, cadmium, mercury
- Microbial panel — total plate count, yeast, mould, E. coli, salmonella
How to get one
Email support@kestalnutrition.com and tell us which product you have. If there is a batch number printed on the bottom of the bottle, send that too. We send the matching report back, unedited.
No account needed, no form to fill in, and you do not have to be a customer to ask.
Why we do not publish them all
Batch numbers change with every production run, and a page of reports for batches nobody is holding is decoration rather than transparency. Ask for one and we send you what we hold for the product in your hand.
Kestál products are manufactured in a cGMP-compliant, FDA-registered facility in the USA.