What is Arsenic Blood test?
An arsenic blood test is used to determine if you have recently been exposed to excessive amounts of the element arsenic.
Arsenic is naturally present in the Earth’s crust in both organic and inorganic forms. It is also used in wood preservatives, pesticides and tobacco. Small arsenic particles are released into the atmosphere and onto the soil from volcanic eruptions and mining activities.
Arsenic from the soil (both natural and added from mining activities) can leach into the groundwater and enter our body through ingestion leading to toxicity and poisoning. Plants grown in arsenic-rich soil may also be a source of arsenic poisoning.
Additionally, arsenic exposure may be due to self-administration (accidentally consumed or deliberately taken for suicidal or homicidal purposes) such as from insecticides, rodenticides or pesticides that contain arsenic. The lethal dose of inorganic arsenic is about 0.6 mg/kg/day.
Inorganic arsenic is extremely toxic. However, it only stays for a short while in the bloodstream - 2 days max. Within 2 days, most arsenic binds to different tissues. It is then slowly processed out from the body.
So, an arsenic blood test is only effective in determining acute exposures to this metal - immediately after exposure. An arsenic blood test can also be used to monitor the effectiveness of arsenic poisoning therapy.