Serum/plasma concentration of a substance measured by immunoassay (e.g., a marker for protein or antibody detection)

What This Test Measures

The test detects the presence and amount of a particular protein or antibody in your blood. This could include markers for inflammation, immune function, or other physiological processes. The method used is immunoassay, which identifies specific substances in your serum or plasma.

Why It Matters in Your Health

Blood tests like this one help doctors diagnose or manage conditions such as infections, autoimmune diseases (e.g., rheumatoid arthritis), or protein-related disorders (e.g., kidney disease). It may also be used to monitor treatment responses or screen for hidden health issues.

Common Uses

This test may be ordered to check for abnormal protein levels, detect immune system activity, or evaluate conditions affecting protein synthesis or breakdown in your body.

Sample Collection and Preparation

A blood sample is drawn from a vein, typically in the arm. The blood is processed to separate serum (if clotted) or plasma (if anticoagulated) for testing. This process ensures accurate measurement of the target substance.