radioimmunoassay

noun ra·dio·im·mu·no·as·say \ˌrā-dē-ˌō-i-myə-nō-ˈa-ˌsā, -i-ˌmyü-, -a-ˈsā\

Definition of RADIOIMMUNOASSAY

: immunoassay of a substance that has been radioactively labeled

— ra·dio·im·mu·no·as·say·able \-ə-bəl\ adjective

1961

Medical Dictionary

noun ra·dio·im·mu·no·as·say \ˌrād-ē-ō-ˌim-yə-nō-ˈas-ˌā, -im-ˌyü-, -a-ˈsā\

: immunoassay of a substance (as insulin) that has been radiolabeled—abbreviation RIA

—ra·dio·im·mu·no·as·say·able \-ə-bəl\ adjective

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