This paper describes a highly sensitive small scale enzyme immunoassay for human chorionic gonadotropin (hCG) in pregnancy urine using a micro-transferable plastic bead (MTPB) as solid phase.
Results of the present method for determination of 40 samples of pregnancy urine correlated well with those of the commercial radioimmunoassay and a better precision was achieved. This solid phase method may be widely applied to the immunoassay of small volumes.
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