Electrolytes are substances that dissociate into ions when dissolved in water, crucial for conducting electricity and maintaining cellular function in biological systems. They play a vital role in regulating nerve and muscle function, hydration, blood pH, blood pressure, and the rebuilding of damaged tissues.
A fasting blood test is a diagnostic tool used to measure certain substances in the blood after a period of not eating or drinking, typically for 8-12 hours, to ensure accurate baseline levels. It is commonly used to assess blood glucose, cholesterol, and triglyceride levels, aiding in the diagnosis and management of conditions like diabetes and hyperlipidemia.