Sakai Y, Seto C, Araie M
Graefes Arch Clin Exp Ophthalmol. 1986;224(2):110-2. doi: 10.1007/BF02141480.
A method for isolating fluorescein glucuronide from the urine using silica gel chromatography and preparative high-performance liquid chromatography is described. The product obtained was free from significant fluorescent impurity on thin-layer chromatography and analytical high-performance liquid chromatography.