OVULATION TESTER IS THE LATEST INNOVATION IN MEDICAL FIELD. ITS PRINCIPLE IS TO USE FEMALE'S SALIVA THROUGH THE TESTER WITH 50 TIMES THE MAGNIFICATION OF MICROSCOPE TO OBSERVE SALIVA TISSUE'S TRANSFORMATION CAUSED BY THE SECRETION OF WHICH THE WOMAN'S BODY PRODUCES A SMALL AMOUNT OF L.H. (LUTEINIZING HORMONE) DURING OVULATION. ACCURACY IS OVER 98% IN LABORATORY TEST. THUS, IT OFFERS WOMEN THE ACCURATE DETECTION OF MENSTRUAL CYCLE AND OVULATION TRANSFORMATIONUNDER THE NATURAL AND CONVENIENT SITUATION ANYTIME.