Hormones are best assessed by?: (A) Flowcytometry, (B) Electrophoresis, (C) ELISA, (D) RIA
Answer is D. Radioimmunoassay (RIA ) permits the measurement of analytes up to picogram quantities. RIA and its modifications have versatile applications in various areas of biology and medicine, including quantitation of hormones, drugs, tumor markers. Reference : Anathanarayan & paniker's 9th edition, pg no:113 <\p>