Serum/plasma substance concentration (qualitative) for a specific protein or biomarker measured by immunoassay

What This Test Measures

This test measures the concentration of a specific protein or substance in your serum or plasma using an immunoassay method. Immunoassays are highly sensitive tests that can detect very small amounts of substances in your blood. The exact protein or substance being tested depends on the clinical indication and may vary based on your healthcare provider’s order.

How the Test Works

Your blood sample is collected and processed to separate serum or plasma. The test then uses antibodies to identify and quantify the target protein or substance. The result is qualitative, meaning it indicates whether the substance is present or not, rather than providing a specific numeric value.

Common Uses

Tests like this are often used for screening or confirming conditions such as infections, autoimmune diseases, genetic disorders, or monitoring certain treatments. They may also be part of routine health evaluations or investigations for unexplained symptoms.

Preparation for the Test

No special preparation is usually required for this test. You may be asked to fast or avoid certain medications for some tests, but this is not applicable here. Follow any specific instructions your healthcare provider gives you before the test.