Bromocresol Green Protein Electrophoresis (BCG Protein Electrophoresis)

What This Test Measures

Electrophoresis separates proteins in your blood based on size and charge. Bromocresol green dye binds to proteins, allowing different protein fractions (such as albumin and globulins) to be visualized and quantified. This helps detect shifts that may signal conditions like inflammation, liver disease, or immune disorders.

Why It’s Done

Your healthcare provider may order this test if you have symptoms like swelling, unexplained weight changes, or signs of liver, kidney, or immune system issues. It’s also used to monitor certain diseases or conditions affecting protein balance in your body.

Common Uses and Indications

This test is particularly useful for diagnosing or monitoring conditions like multiple myeloma, liver disease, or certain types of protein disorders. It can also help assess how well treatments are working for conditions affecting protein metabolism.

How the Test Works

A small sample of your blood is drawn and placed in a gel or medium. An electric current is applied, causing proteins to move toward the opposite charge. The bromocresol green dye highlights different protein bands, which are then measured to determine their relative amounts.