Mercury is a naturally occurring element found in the environment, in various forms. It can be absorbed into the body through the skin, ingested, or inhaled as mercury vapor. This test is performed to measure the amount of mercury in your blood, which may be necessary if you've been exposed to a significant amount of this substance. If you are exhibiting signs and symptoms of mercury poisoning such as weakness, fatigue, and numbness in hands and feet, your healthcare provider may recommend this test. A high level of mercury in your blood could indicate that you have been exposed to harmful levels of this substance. Depending on the extent of the exposure, it could lead to health problems like memory problems, unsteady gait, numbness in the hands and feet, and others.

Some forms of mercury, particularly methylmercury found in certain types of fish, can have toxic effects on the nervous, digestive and immune systems, and on lungs, kidneys, skin, and eyes. Certain types of fish, shellfish, and marine animals can have high levels of mercury. Occupational exposure in industries like mining, manufacturing, dental care, and in some chemical labs can also increase mercury levels in your blood.

If your test results are abnormal, you should consult with your healthcare provider. They will guide you on the necessary steps and treatments if required.