The release patterns of norgestrel in NRID in vivo were simulated after the norgestrel in NRID was dissolved by acetone and the rest of norgestre was determined by Ultraviolet Ray Spectrometer.

在实验室用丙酮溶解，并用紫外线分光光定枚NRID酮剩余量，计算枚NRID酮释放量，模拟分析NRID主成分酮在山羊体的释放规律。