Bromocresol Green Protein Electrophoresis (BCG Protein Electrophoresis)

What This Test Measures

The test separates proteins in your blood based on size and charge. Bromocresol green dye binds to proteins, allowing for visual differentiation. Key proteins like albumin (the main protein in blood plasma) and globulins (proteins involved in immunity and transport) are analyzed. Results may show shifts in protein patterns that can signal underlying health issues.

Why It’s Done

Doctors may order this test if you have symptoms like swelling, unexplained weight loss, fatigue, or if they suspect conditions like cirrhosis, kidney disease, or protein-losing syndromes. It’s also used in research or specialized diagnostic scenarios where detailed protein profiling is needed.

Sample Collection and Preparation

A blood sample is drawn from a vein, typically in your arm. The blood is then processed to separate serum (the liquid part after clotting) for testing. The sample is sent to a lab where it undergoes electrophoresis to separate proteins. Results are often reported as a visual pattern or specific protein ratios.

Interpreting Results

Results are typically qualitative (descriptive rather than numerical) and focus on protein patterns. For example, a shift toward heavier proteins might indicate liver disease, while a low albumin level could signal kidney problems. Your doctor will interpret results in the context of your symptoms and medical history.