What are the four of the electrolytes found in the plasma?

News 2025-04-07

The four primary electrolytes found in plasma are:

Sodium (Na⁺)

Role: Primary cation in extracellular fluid, crucial for maintaining fluid balance, nerve and muscle function, and acid-base equilibrium.

Normal Range: 135–145 mmol/L.

Potassium (K⁺)

Role: Primary cation in intracellular fluid, essential for cell metabolism, nerve transmission, and muscle contraction.

Normal Range: 3.5–5.5 mmol/L.

Chloride (Cl⁻)

Role: Primary anion in extracellular fluid, works with sodium to maintain fluid balance and acid-base balance.

Normal Range: 96–108 mmol/L.

Calcium (Ca²⁺)

Role: Vital for bone health, nerve transmission, muscle contraction, blood clotting, and enzyme activation.

Normal Range: 2.25–2.58 mmol/L (total calcium).

These electrolytes are critical for bodily functions, and imbalances can lead to conditions like dehydration, muscle weakness, arrhythmias, or neurological issues. Testing these levels helps diagnose and manage electrolyte disorders.