Electrolyte Panel with Venous Blood Specimen (Including Sodium, Potassium, Chloride, Bicarbonate, and Calcium)

What Does This Test Measure?

This test includes measurements for several electrolytes, which are minerals that play critical roles in your body. Typically, it assesses sodium (Na⁺), potassium (K⁺), chloride (Cl⁻), bicarbonate (HCO₃⁻), and calcium (Ca²⁺). These electrolytes help control fluid balance, nerve function, muscle activity, and bone health. Some panels may also include magnesium or phosphorus, depending on the specific order.

Why Is This Test Done?

Doctors order this test to check for imbalances that could cause symptoms like confusion, irregular heartbeat, muscle weakness, or excessive thirst. It’s often used to monitor conditions like heart disease, kidney problems, dehydration, or metabolic disorders.

What Might Abnormal Results Indicate?

High or low levels of electrolytes can signal underlying health issues. For example, too much sodium might indicate dehydration or kidney problems, while low potassium could suggest heart rhythm issues or poor kidney function. Calcium imbalances may relate to bone health or nerve/muscle disorders.

How Is This Test Performed?

A blood sample is drawn from a vein in your arm by a healthcare professional. The blood is sent to a lab where it’s analyzed to measure the electrolyte levels. The results are compared to standard reference ranges to determine if any imbalances are present.