The test used to diagnose Dubin .lohnson syndrome is-
A prolonged BSP dye excretion test is diagnostic of Dubin Johnson syndrome BSP is a dye which is removed from circulation by the same mechanism as bilirubin. Reference Harsh mohan page no.593
G.I.T
Scrum transaminases
Bromsulphalein test (BSP)
Hippuratc test
Gamma glutamyl transferase level
Bromsulphalein test (BSP)