: Protein, Serum or Plasma, Mass Concentration Measurement

: What This Test Measures

: Your blood contains many different proteins that perform jobs like carrying nutrients, fighting infection, and maintaining fluid balance. This test measures the combined mass of all these proteins in the liquid part of your blood (serum or plasma) and reports it as a mass concentration.

: Why It Is Ordered

: A clinician may order this test as part of a general health panel or when monitoring conditions that affect protein levels, such as liver or kidney problems, nutritional concerns, or unusual swelling. It is often interpreted alongside other tests such as albumin.

: How the Sample Is Collected

: A small blood sample is drawn from a vein, usually in your arm. Serum or plasma is then separated from the blood cells in the laboratory so the protein can be measured. No special preparation is typically needed unless your clinician says otherwise.

: Understanding Your Results

: Results are reported as a concentration, but a single value is rarely interpreted alone. Your clinician considers the result together with your symptoms, other lab tests, and your overall health. If your level is outside the expected range, they may recommend additional testing.