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How Much Do You Know About Ovulation Test Strips?

Among the common methods for predicting ovulation time, the ovulation fertility kit is probably the most commonly used one. Women who are preparing for pregnancy are familiar with ovulation testing kits. But how much do you know about the knowledge of ovulation test strips?

Ⅰ. Ovulation test strips can detect the LH hormone levels in urine samples

When it comes to ovulation testing kits, the LH hormone must be introduced first. Ovulation fertility kit tests the levels of the hormone LH in urine. LH stands for luteinizing hormone. It is a glycoprotein gonadotropin secreted by adenohypophysial cells that promotes follicular maturation and ovulation. During the menstrual cycle, LH changes periodically. When LH peak occurs, the ovulation usually happens within 24-48 hours, but the ovulation test paper cannot confirm it. A basic BBT thermometer with APP is used to confirm ovulation. Ovulation test strips measure LH levels in urine to determine if ovulation is imminent. The cyclical changes of LH hormones are characterized by "sharp ups and downs with short peaks". Therefore, women who are preparing for pregnancy often report that strong positive cannot be detected.

Ⅱ. Structure of ovulation test strips

If we open up the instructions for the ovulation test strip, we can see a long and very complicated introduction. For example, during detection, LH in the urine sample is combined with colloidal gold of the mouse anti-β-LH monoclonal antibody in the solid phase on the reagent strip. The conjugate migrates upward to the detection region with capillary action of the membrane, and a red band appears when it reacts with the mouse anti-α-LH monoclonal antibody on the membrane. In fact, it is not so complicated. To simplify it, the ovulation test strip has two areas, one is the test area (T), the other one is the control area (C), and the detection area is closer to the urine sample.

It should be noted that due to physiological reasons, the LH levels of different individuals vary greatly. Therefore, "strong positive" and "weakening positive" are relative to themselves. There is no point in comparing your result with others. This can also explain why some women who are preparing pregnancy can have a strong positive result for a long time (LH stays at a high level for a long time, exceeding the maximum value of the test paper), while some women who are preparing pregnancy have a hard time detecting a strong positive (LH peak time is short and low). It is suggested to combine other methods to predict ovulation time to make a comprehensive judgment for women who have strong positive or weak positive for a long time. Shecare provides bulk ovulation test strips, contact us for more details.

Ⅲ. How to use ovulation test strips

1. We need to figure out when to start using test strips

Generally speaking, the ovulation day appears in the first 14 days of the next menstruation (because the luteal cycle is generally 14 days), so for women who are preparing for pregnancy with regular menstruation, they can use the ovulation test strip from 14+3 days before the next menstruation, that is, 17 days in advance. For women who are preparing for pregnancy with irregular menstruation or worried feelings, they can use the ovulation test strip 7 days after the menstruation.

2. We need to increase the frequency of testing

In general, the closer you are to ovulation, the more frequent testing is needed. When there is weak positive signal, it is recommended to test 4 times a day in order to capture the time from strong positive and to weak positive.

3. There are also some precautions in the specific use of methods

For example, morning urine should not be used. Drink less water 2 hours before the test to avoid diluting LH level. Recommend to take a urine sample at the same time each day, etc. In addition, there are other requirements, such as collecting urine in clean and dry containers, not immersing too much urine in ovulation test strip (there are many deep urine cups on the market, which need to be paid attention to), not touching the reaction membrane, not using damp test paper when opened, etc. Just read the instructions carefully.

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