1. a laboratory test that uses antibodies to detect and measure the presence or concentration of a specific substance in a sample
Usage: medical; scientific

Examples

• The doctor ordered an immunoassay to check for the presence of the virus.
• Pregnancy tests are a common type of immunoassay available over the counter.
• The laboratory used an immunoassay to measure hormone levels in the blood sample.
• Researchers developed a new immunoassay to detect early signs of the disease.
• The immunoassay results showed elevated levels of the protein marker.
• Drug testing often relies on immunoassay techniques for initial screening.