How to Guides

Ovulation Test Strips

Luteinizing hormone is always present in human urine. LH increases dramatically just before women’s most fertile day of the month in a process commonly referred to as the “LH Surge.” This LH increase triggers ovulation, which means an egg is released from woman’s ovary. Because the egg can be fertilized only 6 to 24 hours after ovulation, detecting ovulation in advance by testing for the LH surge is very important for women seeking pregnancy.

The best times to test are between 11:00am to 3:00pm and 5:00pm to 10:00pm. Early morning testing is not recommended as LH does not show up in the urine until later in the day. If you want to make sure that you catch your surge, you may test twice a day, once in the earlier time frame and the other in the later time frame. The detection limit for the LH Test Kit is 30 mIU/ml LH. Urine samples equal to or greater than 30 mIU/ml wil

To find out when to begin testing, determine the length of normal period cycle. The length of cycle is from the beginning of one period (the day of first bleeding) to the day before the beginning of the next cycle. The first day of bleeding or spotting is counted as day one (1). If the 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. See chart below for when to start testing.

Try to collect your urine at about the same time every day, though this is not absolutely necessary. Don’t test your urine as soon as you wake up, because you may miss the first day of your LH surge. Try to reduce the amount of liquids you drink for about two hours before you do the test. Too much liquid will dilute your urine, which could make it more difficult to detect the surge.

Pregnancy Tests Strips

HCG is a hormone produced by trophoblastic tissue and it appears around the 8-9th day after ovulation, or around the 4th day after conception. In a 28-day cycle with ovulation occurring at day 14, HCG can be detected in urine or serum in minute quantities around day 23, or 5 days before the expected menstruation. The hormone concentration doubles approximately every 2 days and peaks between 7-12 weeks after the first day of the last menstrual period. Best time to test is with first morning urine.


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