Ovulation test strips to test pregnancy

I believe that many women have used ovulation test strips to test whether they are ovulating. Its principle is the same as that of early pregnancy test strips. The method of use is very simple and convenient, and the accuracy is relatively high. It is an indispensable method for testing ovulation for many couples in the pregnancy preparation stage. However, some female friends found that when they used ovulation test strips, the result was strongly positive, while when they used early pregnancy test strips, the result was also positive.

Faced with this situation, many women feel that ovulation test strips are just as effective in testing pregnancy. Normally, it is impossible for ovulation test strips to detect pregnancy because the urine components they test are different. Why can ovulation test strips be used to test pregnancy? The reasons are as follows:

How does the ovulation test strip detect pregnancy? HCG has two chains, α and β. The structure of the α chain is basically similar to LH and fsh, and is prone to cross-reaction. Therefore, in medicine, β is generally used as the standard to determine whether pregnancy occurs. Because HCG and LH cross, ovulation test strips sometimes also react to early pregnancy. Therefore, before the early pregnancy test paper, the ovulation test paper had already detected early pregnancy.

Why is it said that early pregnancy test strips are not as early as ovulation test strips?

Because nowadays early pregnancy test strips basically test βHCG, and the β content in HCG is much lower than α. When βHCG is only 50-100, αHCG has often reached about one or two thousand. The early pregnancy test paper is determined by βHCG, and the cross reaction is determined by αHCG, so the ovulation test paper will appear positive earlier than the early pregnancy test paper.

But is it possible that the early pregnancy test strips can also detect ovulation? Impossible, the manufacture of early pregnancy test strips takes this into consideration and it eliminates the occurrence of cross reactions. Therefore, it can only detect HCG.

Women are diagnosed with infertility. That's because when measuring ovulation, there is basically no HCG in the female body. Therefore, the ovulation test strip does not need to consider the effect of HCG on it; when using the early pregnancy test strip, there is already a certain amount of LH in the female body, so the early pregnancy test strip must first eliminate the influence of LH on it.

Knowing the reliability of ovulation test strips in detecting pregnancy, you may want to try using ovulation test strips for testing. However, to be on the safe side, it is best to combine the results of early pregnancy test strips to make a judgment. In addition, you need to pay attention during the test to avoid incorrect operating methods to prevent inaccurate test results and affect the results.