Serum Injection of the HPLC Column for Carbamazepine Assay

Abstract

Serum was injected directly on an HPLC column packed with C₁, 6.5 μm particle size, 300 Å pore-packing material for carbamazepine determination. The use of a wide-pore column with low hydrophobicity eliminated excessive pressure buildup in the column from protein precipitation which is usually caused by the high concentration of organic solvents in the mobile phase. This simple approach can be utilized for the determination of other drugs and endogenous compounds in serum.