General/Women's Health, Pregnancy Posts

What happens when you do an ovulation test when pregnant?

Disclaimer: This is a very pointless post.

But I’m 20 weeks pregnant and found one spare ovulation test in the cupboard and just wondered what it would do.

Turns out I obviously have LH in my system. Look at that shiner! state that ‘Luteinising hormone (LH) is an important hormone both men and women produce. This hormone is known as a gonadotropin, and it affects the sex organs in both men and women. For women, it affects ovaries, and in men, it affects the testes. LH plays a role in puberty, menstruation, and fertility’.jk

Ok so why is it present during pregnancy I wanted to know. Actually I’m a bit confused on this one as the What to Expect website claims LH is inactive during pregnancy.

A short google later and I found this at (

‘An ovulation test works by detecting the surge in luteinizing hormone (LH) that precedes ovulation. Pregnancy tests work by detecting the presence of human chorionic gonadotropin (hCG) in your urine. Interestingly, hCG and LH are both known scientifically as glycoproteins, which simply means that these hormones are made up of a protein with a sugar attached to it. Of even greater interest for this discussion, is the fact that the protein parts of hCG and LH look very similar. So similar, in fact, a standard ovulation test (OPK) is unable to distinguish between LH and hCG in your urine. Therefore, if you have enough of either of the two hormones (LH or hCG) in your urine at the time you test using an OPK, you will get a positive result on the OPK.’

Mystery solved. Now, back to more exciting things for me….like sleep….

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