To see if the ovulation test is a strong positive test, you can look at the test line and the control line of the ovulation test, mainly by the color change to judge the test result. If the color of the control line is the same as or darker than the color of the test strip, it is a strong positive reaction. If the ovulation test paper shows a strong positive reaction, it means that the follicle has already developed and the hormones in the woman’s body are in the highest concentration, which will promote ovulation and will be expelled from the body in about 1-2 days. If the couple is planning to have children, they can prepare for intercourse, as the chances of conception will be increased at this time. If the test is then repeated and the result is found to change from positive to negative, this would be the best time for couples to have intercourse if they are prone to conceive. If the test is repeated the next day and shows a complete negative result, it means that ovulation has already occurred.