Yes, the test reads your individual hormone levels and on the first day you test in each cycle the level of estrogen will be identified. The test cannot display High Fertility on the first day you test as it needs to determine your baseline level. Subsequent tests use this baseline level and when a significant rise in estrogen is detected it will display High Fertility. The test will then display High Fertility until it detects the LH surge and Peak Fertility is displayed. If an LH surge is detected on the first day of testing, Peak Fertility will be displayed.