Cobalt (Co) Level, By Atomic Absorption Spectrophotometer Flame and GFA mode is used to determine the concentration of cobalt in blood or urine samples. Cobalt is considered an essential trace element, as it plays a role in the formation of vitamin B12 and the health of the nervous system. Elevated cobalt levels may indicate excessive exposure, such as poisoning resulting from inhalation of dust or consumption of cobalt-rich foods. On the other hand, low levels may indicate a deficiency that can affect overall health. This technique provides high measurement accuracy, helping physicians assess patients’ health status and guide appropriate treatment when needed. The analysis is considered an important tool in monitoring occupational exposure and in evaluating conditions related to deficiency or toxicity.