Non-Competitive
RIA or IRMA
•also called
Immunoradiometric Assay (IRMA)
•uses the
non-competitive binding technique or Asandwich@
•technique
•uses
radioisotopes as labels
•amount of
labeled reactant left in system is measured using
•appropriate
radiation detector:
•amount of
labeled reactant left in system is directly
•proportional to amount of antigen in patient
sample