The David LH Ovulation Test Strip will help you detect the time when you are most fertile and most likely to become pregnant. Luteinizing hormone (LH) increases dramatically, known as the LH Surge, just before women’s most fertile days of the month. This LH increase triggers ovulation which is when the egg is released from woman’s ovary. The egg can only be fertilized 6 to 24 hours after ovulation and use of Ovulation test strips can be a very valuable tool in helping to achieve pregnancy.
The best times to test are between 11am and 3pm and 5pm and 10pm. If you want to make sure that you catch your surge, you may want to test twice a day, once in the earlier time frame and the other in the later time frame. Please keep in mind that while you may have the initial surge of LH earlier in the day if testing via blood tests, you will not get a positive result on the ovulation test until 4-5 hours later when the surge actually reaches your urine.
Before You Begin
When to Begin Testing
To find out when to begin testing, determine the length of your normal cycle. The length of your cycle is from the beginning of one period (the day of first bleeding) to the day before the beginning of the next. Count the first day of bleeding or spotting as day one (1). If your cycle length is irregular, that is, if it varies by more than a few days each month take the average number of days for the last 3 months. Use the chart shown to work out the day you should begin testing. The day you begin testing is listed opposite the number of days in your normal cycle.
For example, if your period normally begins every 28 days, you should begin testing eleven (11) days after the beginning of your last period.
Note in the calendar above: If the ninth ( 9th ) in the calendar above is the first day (day one *) of menstrual bleeding, then the 19th, or day eleven, of your cycle is the day to begin testing (s).
Interpretation of the Test as the LH Ovulation Test Strip begins to work, a colored band will appear in the upper section of the result area to show that the test is working properly. This band is the Control Line. The lower section of the result area indicates the test results. If another colored band, the Test Line, appears at the lower section of the result area and is of equal or darker color than the Control Line, the results should be interpreted as a positive test.
Negative Result (No LH Surge)
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David Ovulation Test Strips (70pcs) + Pregnancy Test Strips (20pcs)
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