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Study material: Venous blood
Response time (working day): 14
The test is done on an empty stomach: Yes
Home call service: YesDetermination of arsenic (As, Arsenic) in blood is used to assess the impact of recent arsenic intake on the body. The study is important in the assessment of both acute poisoning and occupational or environmental exposure.
Arsenic is historically the strongest poison. It is known as the "king of poisons and the poison of kings". It exists in nature as metalloid (As0), inorganic (As3+ and As5+), organic arsenic and arsine (AsH3).
Arsenic is absorbed from the small intestine. It is also possible to contaminate it through the skin and respiratory tract. It spreads to: lungs, heart, kidneys, liver, muscles, nervous tissue.
A higher than normal concentration of heavy metals in the blood may be a sign of severe intoxication, but not always. Even in the absence of symptoms, it is necessary to find a source of intoxication to reduce toxic exposure. Depending on the need, chelation (binding) therapy is also prescribed. Chelation therapy is usually accompanied by serious side effects, so the question of treatment should be decided by a doctor based on an assessment of risks and benefits.
A normal or low concentration of heavy metals in the blood indicates the absence of intoxication. However, some heavy metals quickly leave the bloodstream and accumulate in tissues. Therefore, in the presence of symptoms, despite the detection of a low concentration of heavy metals in the blood, sometimes additional studies are necessary - skin, hair, nails and other tissues.
Acute and chronic arsenic poisoning is associated with the inactivation of a number of vital enzymes. By inactivating pyruvate dehydrogenase, the Krebs cycle is blocked and, as a result, ATP synthesis is delayed, which leads to cell cycle disruption and cell necrosis. The toxic effect of arsenic on the endothelium of blood vessels leads to increased permeability of blood vessels, expansion of blood vessels and circulatory collapse. In case of chronic intoxication, arsenic can cross the placental barrier and initiate miscarriage, stillbirth or premature birth in the early gestational period.
Arsenic accumulates in skin cells and causes keratosis and hyperpigmentation. Decreased expression of keratinocytes is accompanied by apoptosis aberration and skin tumorigenesis.
Hepatocellular carcinoma and angiosarcoma are associated with arsenic intoxication.
Oxidative stress-induced lipid peroxidation leads to DNA damage and CNS cell death.
The research material is selected depending on which metal is being tested and how long it was exposed to (short-term, long-term). Urine and blood are the most common test materials. To diagnose chronic intoxication, it is sometimes necessary to study nails and hair.
Some foods (fish, crustaceans) and medicines may contain heavy metals, so it is not recommended to take such products and medicines for 48 hours before the study.
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Testing process
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