EDTA

Definition

EDTA (Ethylenediaminetetraacetic acid) is a chelating agent that binds to metal ions, aiding in the removal of heavy metals from the bloodstream. It is commonly used in medical settings for treating metal poisoning and maintaining the stability of pharmaceuticals.

5 Must Know Facts For Your Next Test

1. EDTA is often used to treat lead poisoning by binding to lead ions and helping them be excreted from the body.
2. In laboratory settings, EDTA prevents blood samples from clotting by binding calcium ions.
3. EDTA can bind to various metal ions including calcium, magnesium, iron, and zinc.
4. It is also used in some foods and cosmetics as a preservative due to its ability to bind with metal contaminants.
5. Side effects of EDTA treatment can include hypocalcemia because it reduces calcium levels in the blood.

Review Questions

• What is the primary medical use of EDTA?
• How does EDTA prevent blood samples from clotting in laboratory tests?
• Name two potential side effects or risks associated with EDTA treatment.

Related terms

Chelation Therapy: A medical procedure that involves the administration of chelating agents to remove heavy metals from the body.

Hypocalcemia:

A condition characterized by low levels of calcium in the blood, which can occur as a side effect of EDTA treatment.

Heavy Metal Poisoning: Toxicity caused by accumulation of heavy metals in the body, often treated using chelation therapy with agents like EDTA.