I was instructed to return to KKH on the second day of my period for a blood test. I was wondering why is there a need to purposely do a blood test on the second day of my period and so I went online to do a search.
So for the benefit of others who are as puzzled as me, here is why:
The main purpose of performing the blood test on Day 2 or 3 of the period is to check whether there is a good reserve of eggs in the ovary and that the hormonal system leading to their release is intact. This is done by checking on the levels of follicle stimulating hormone (FSH) and luteinizing hormone (LH).
I found a detailed explanation of the importance of FSH and LH from RMC of Connecticut.
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