Sb. Patel et al., A SENSITIVE ELISA FOR 6-BETA-HYDROXYCORTISOL IN URINE USING ENZYME PENICILLINASE (BETA-LACTAMASE), Journal of steroid biochemistry and molecular biology, 48(2-3), 1994, pp. 293-296
A sensitive and specific, enzyme labelled immunosorbent assay (ELISA)
for 6beta-hydroxycortisol in diluted urine using penicillinase was dev
eloped. 6beta-Hydroxycortisol-21-hemisuccinate was conjugated with enz
yme penicillinase. Antibody immobilized on a polyvinylchloride ELISA p
late (Dynatech) was used for separation of bound from free ligand. The
sensitivity of the assay was between 2.0-3.0 pg per well and recovery
of 6beta-hydroxycortisol from urine ranged between 85.0-108.0%. The a
ssay is simple, rapid and precise.