Serum or plasma substance concentration (unspecified analyte) measured by immunoassay (CLIA)

What This Test Measures

This test measures the concentration of a specific substance in your serum or plasma using a highly sensitive immunoassay method. The exact substance being tested may vary depending on clinical need, but it could include proteins, antibodies, or other biomarkers. The test is often used as a screening tool to detect abnormalities that may indicate conditions such as infections, autoimmune diseases, or other health concerns.

Why It Matters in Your Health

Detecting abnormal levels of certain substances early can help doctors diagnose and manage conditions like infections, autoimmune disorders, or metabolic issues. For example, it may help identify markers of inflammation, immune system activity, or protein abnormalities that could signal underlying health problems.

Common Uses and Indications

This test may be ordered to screen for conditions such as autoimmune diseases (e.g., rheumatoid arthritis, lupus), infections (e.g., viral or bacterial), or other metabolic or genetic disorders. It could also be part of a broader diagnostic workup for unexplained symptoms or chronic health concerns.

Sample Collection and Preparation

A blood sample is typically collected from a vein in your arm. The sample is then processed to separate serum or plasma, which is sent to the lab for testing. You may be asked to fast or avoid certain medications before the test, depending on the specific instructions from your healthcare provider.