Bismuth (Bi) Level, by Atomic Absorption Spectrophotometer Flame and GFA mode is a laboratory test designed to measure the concentration of bismuth in biological samples such as blood or urine, as well as in environmental samples like soil and water. Bismuth is considered a rare element, but excessive exposure can have negative health effects. This analysis helps evaluate bismuth levels and ensure the absence of contamination or harmful exposure, contributing to toxicological studies and the assessment of health risks associated with heavy metal exposure. It is commonly used in environmental and toxicology research and in public health fields.