Serum or Plasma Substance Concentration by Immunoassay (TMB-based)

What This Test Measures

The test uses an immunoassay technique to detect and quantify a particular substance in your blood. The method relies on antibodies binding to the target analyte, triggering a chemical reaction that produces a measurable color change (TMB). This helps determine whether the substance is present above or below expected levels.

How the Test Works

Your blood sample is processed to separate serum or plasma, where the target substance is isolated. The immunoassay reagent is added, and if the substance is present, it reacts with the antibodies to produce a detectable signal. The color intensity correlates with the concentration of the analyte.

Common Uses

This test may be used to screen for, diagnose, or monitor conditions related to specific proteins, such as inflammation markers, autoimmune diseases, or certain infections. It can also assess drug levels or therapeutic responses in some cases.

When You Might Need This Test

Your healthcare provider may order this test if you have symptoms suggestive of a condition involving the target analyte, such as unexplained fevers, chronic inflammation, or suspected autoimmune activity. It may also be part of routine monitoring for certain treatments.