The use of microtiter plates for the simple and sensitive determination of insulin by an ELISA method

A method of insulin determination using a commercially available ELISA kit was modified for use in microtiter plates. The adapted assay, based on the binding of porcine anti-guinea pig insulin antibodies to microtiter plates and insulin-peroxidase conjugate as displacer, is sensitive between 0.5 and 30 ng/ml. Since it uses only 10-40 microliter of sample material it enables the determination of 5-100 pg of insulin. The rapid (5-6 h), automatable, reproducible and reliable assay makes it possible to determine many samples in a short time.