抄録
We evaluate E3 kit which is commercially available, and have found some problems. Effect of protein on adsorption of estrogen to Amberlite XAD-2 is observed and the effect is increased by increased concentration of protein.
Abnormal absorption curve is also observed with samples from pregnant woman given some antibiotics. The interference of these drugs is corrected by three points wavelength measurement, but the effects of protein could not be avoided.
