A Vitamin B7 (Biotin) serum test measures the level of biotin in your blood to check for a vitamin deficiency or metabolic issues. [1] (https://www.mayocliniclabs.com/test-catalog/overview/606867/biotin-serum), [2] (https://www.bioagilytix.com/wp-content/uploads/2020/07/Biotin-B7-Technical-Brief-March-2020.pdf)Chikhali Chinchwad
