Which acronym corresponds to a multiplex assay using fluorescent labels?

• A. Enzyme-linked immunosorbent assay
• B. Enzyme-labile immunoassay
• C. Multiplex fluorescent immunoassay
• D. Endocrine laboratory immunoassay

Answer: (C)

Multiplex fluorescent detection in immunoassays lets you measure several targets in one run by using different fluorescent labels. A multiplex fluorescent immunoassay employs this approach, tagging antibodies or reporters with distinct fluorescence so signals from multiple analytes are read simultaneously. The acronym used for this method is typically MFI, standing for multiplex fluorescent immunoassay; this makes the description of that approach the best match. The other options describe formats that are single-target or rely on colorimetric readouts rather than fluorescence, so they don’t fit the scenario of a multiplex fluorescent approach.