Abstract
Sodium azide is a well-known bacteriostatic reagent, and is conventionally added to buffer for enzyme immunoassay. Since, however, sodium azide inhibits the peroxidase activity, we cannot use it for enzyme immunoassay with peroxidase conjugate.
In the present study, we found that phenolic group substances of low molecular weight as tyrosine, phenol red, and phenol blocked the interference by sodium azide.
