Tag: Lab testing

Studies suggest that many people absorb only a fraction of the nutrients from their daily supplements, highlighting the importance of understanding bioavailability and absorption. Discover how do you know if your body is absorbing supplements by recognizing the signs, understanding influencing factors, and exploring testing options to ensure you are getting the most out of your regimen.

According to studies and case reports, certain seizure medications, such as lamotrigine, can cause a false positive on an initial urine screening test for illicit substances like PCP. Understanding the difference between screening and confirmation tests is critical for anyone concerned if their seizure medicine will show up on a drug test.

High-dose biotin supplements are known to interfere with up to 70% of common laboratory tests, a critical concern for transplant patients on the immunosuppressant tacrolimus [1.2.4]. The key question for patient safety is: does biotin affect tacrolimus levels directly, or is the issue rooted in the testing method itself?