Everything about LH (Luteinizing Hormone)



What is LH?

LH stands for Luteinizing Hormone. LH plays an important role in ovulation. It controls women's menstrual cycle where it triggers the release of an egg from the ovary.


Why is LH test needed?

LH is ordered to evaluate fertility issues with your ovaries. It helps in investigating irregular menstrual cycles. Once a woman hit menopause, her LH levels will rise as her ovaries have ceased to function.


When can I test LH?

You should collect your blood sample on the 3rd full day of your period. The first day of your period is the first day you get a full flow by 5 PM. For example, if your period started on Monday but you only have spotting and your full flow started after 5:30 PM, then Tuesday will be your first day of period and Thursday is the 3rd day - i.e., the day you should prick your finger and collect your blood.

I am on birth control, can I test my LH?

No. LH gives insight into your ovulation. When you are on hormonal birth controls, you are likely not ovulating. As a result, we can't test your LH.

My LH is off, what does it mean?

Too much or too little LH can cause infertility or menstrual difficulties. If your results deviates from the reference point, we recommend you to share them with your GP. You can also set up a call with Grip's doctor via hello@gripfertility.com.




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Grip Fertility tests are intended exclusively for wellness monitoring. The tests are not to be used for diagnosis or to replace a consultation with a doctor. 

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