Serum or Plasma Substance Concentration (Bromocresol Green Dye Binding) for a Specific Protein or Antigen

What This Test Measures

The test uses bromocresol green (BCG), a dye that binds to certain proteins or antigens in your serum or plasma. When the dye binds, it changes color, allowing the lab to quantify the concentration of the target substance. This method is often used for qualitative or semi-quantitative screening rather than precise measurements of specific analytes.

How the Sample Is Collected

A blood sample is drawn from a vein, typically in your arm, and sent to the lab. The test may be performed on serum (after clotting) or plasma (anticoagulated blood). The lab processes the sample using the BCG dye-binding technique.

Possible Uses and Conditions

This test may be used in screening or confirming conditions related to protein metabolism, such as certain liver diseases, protein disorders, or monitoring therapeutic effects of medications that alter protein levels. It is not specific to one disease but can provide general insight into protein binding capacity.

What Results Mean

Results are qualitative or semi-quantitative, meaning they may indicate whether the substance levels are within expected ranges or outside them but do not provide exact numeric values. Your healthcare provider will interpret the results in the context of your symptoms and medical history.