When does LH decrease?

In the past, when solving other problems, it was said that LH reaches its peak right before ovulation (about 2-4 days before).
However, when solving the BMAT problem, LH begins to decrease after ovulation.
And even if I search on Google, I get a variety of answers so I can’t find out exactly.
I didn’t expect such an ambiguous concept to appear on the test, but this question appeared on the BMAT.
What concepts should I memorize? Does anyone know exactly about this?

u should look up a graph of all the hormones related to the menstrual cycle and how they fluctuate during the 28 days. yea Lutenizing Hormone (LH) peaks right before ovulation, along with FSH and Estrogen, then rapidly drops

I knew that too.
But there is also a graph like this…
And I was confused because many people said that LH decreases rapidly right after ovulation.

I have been taught with this at the university:

I also accept that LH levels are high right before the ovulation. Its task is to stimulate ovulation and leave a remaining body called the corpus luteum. As soon as the corpus luteum is established, LH levels drop.
(LH has other functions too e.g. stimulation of follicle maturation, estrogen and progesteron secretion)


I knew that too.
But looking at this problem, LH is increasing in S.
Since it peaks just before ovulation, I thought it should decrease during ovulation.
This is BMAT. In the previous IMAT problem, there was a question about reaching the peak before ovulation, so should we just ignore this problem?

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I will understand this one as the LH is in its peak, inducing the ovulation, which is correct. In the former question, I also said that LH is decreasing right after the ovulation, which is the case in reality.

How diagrams show it with marginal differences, is not so important as we can describe it in words.
You are right. Some diagrams are confusing though. :innocent:

Since there is a lot of incorrect information on the Internet, I thought this was also the case, but I was very confused when this information appeared on BMAT. :joy:
Thank you for your help.

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You’re welcome.
If I were you, I will discard this BMAT question. :pray: