Serum or Plasma Protein Electrophoresis with Bromocresol Purple Dye Binding (Qualitative)

What This Test Measures

Protein electrophoresis separates blood proteins into fractions (e.g., albumin, globulins) based on size and charge. Bromocresol purple dye binds to proteins, allowing visual assessment of their relative amounts. This qualitative method helps detect shifts in protein composition that may indicate conditions like multiple myeloma, liver disease, or immune disorders.

Why It’s Done

Your healthcare provider may order this test if you have symptoms like unexplained weight loss, fatigue, swollen glands, or signs of organ dysfunction. It’s also used as part of a broader evaluation for conditions affecting protein synthesis or breakdown.

Sample Collection and Preparation

A blood sample is drawn from a vein, typically in the arm. The blood is then processed to separate serum or plasma for testing. Results are interpreted visually or through automated analysis of dye binding patterns.

What to Expect Before the Test

No special preparation is usually needed, but inform your provider about medications or recent illnesses that could affect results. Avoid fasting unless instructed, as it may impact protein levels temporarily.