Serum/Plasma Substance Concentration for a Renal Protein (e.g., Albumin, Creatinine, Urea, or Electrolytes) via Immunoassay

What This Test Measures

Your sample will be tested for several important substances, including proteins like albumin, electrolytes such as sodium and potassium, and waste products like creatinine or urea. These measurements help evaluate kidney health and overall fluid balance in your body.

Why It’s Done

Doctors order this test to check for kidney problems, monitor chronic conditions (like diabetes or high blood pressure), or assess hydration status. It can also help identify signs of dehydration, kidney disease, or electrolyte imbalances.

Sample Collection and Preparation

A blood sample is drawn from a vein, usually in your arm. The blood is then separated into serum (liquid part after clotting) or plasma (liquid part after centrifugation) for testing. No special preparation is needed, but fasting may be required depending on specific tests included.

What to Expect Before the Test

You may be asked to avoid certain foods or medications for a few days before the test, depending on the specific substances being measured. Hydration status can also affect results, so drinking water as directed is important.