An Aldosterone ELISA Kit is a type of kit that can be used to measure the level of aldosterone in various biological samples such as plasma, serum, urine, etc. 

A CBG (Corticosteroid Binding Globulin) ELISA Kit is a type of kit that can be used to measure the level of CBG in various biological samples such as serum, plasma, tissue homogenates, etc.

A Corticosterone ELISA Kit is a type of kit that can be used to measure the level of corticosterone in various biological samples such as plasma, serum, urine, milk, saliva and cell culture supernatant. 

A Cortisol ELISA Kit is a type of kit that can be used to measure the level of cortisol in various biological samples such as serum, plasma, urine, saliva, dried fecal extracts or cell culture medium. 

A Plasma Renin Activity ELISA Kit is a type of kit that can be used to measure the level of plasma renin activity (PRA) in various biological samples such as serum, plasma, urine, etc.

A Renin ELISA Kit is a type of kit that can be used to measure the level of renin in various biological samples such as serum, plasma, urine, or cell culture medium.