A: Based on the information and research available, we are not aware of any ingredients in the Rootcology supplements that will interfere with lab results. The only ones that I currently know of are biotin, and iodine, from some research, can alter results of thyroid labs. For this reason, Dr. Wentz does not include these ingredients in the Rootcology supplements.
As always, it is recommended not taking your thyroid medications prior to lab draws, as they can alter your lab results, and instead, bring them with you and take your thyroid medication after your blood is drawn.