This add-on measures the level of Vitamin B1 (Thiamine), an essential nutrient that supports energy metabolism, nerve function, and heart health. Low levels of thiamine can lead to fatigue, cognitive issues, or nerve-related symptoms. Testing helps identify deficiencies even before symptoms become noticeable.

Please note that this add-on requires additional processing time, and results will be available within approximately 6 business days.

Read our complete guide to Vitamin B1 →