A fluorometric method for determining bethanidine in blood plasma is described. The bethanidine is extracted into chloroform, a drug‐dye complex with eosin Y is formed, and the fluorescence is measured (excitation, 535 nm; fluorescence, 560 nm). The assay detects 0.02 μM bethanidine (4 ng/ml) in plasma. The relative fluorescence of several body constituents and antihypertensive drugs is negligible. The plasma levels of bethanidine in four hypertensive patients receiving this drug were measured.
All Science Journal Classification (ASJC) codes
- Pharmaceutical Science