An acceptable LH level varies significantly by age, sex, and menstrual cycle phase, but generally, adult women have lower levels (e.g., 2-12.6 IU/L in the follicular phase), a surge (e.g., 19-103 IU/L) during ovulation, and lower levels again later, while adult men typically stay around 1-9 IU/L. The key is understanding your pattern, as levels fluctuate daily, and what's "normal" depends on your body's unique cycle and health, so a doctor should interpret results.
A: A blood LH level of 16-104 IU/L, measured around day 14 of a woman's menstrual cycle, indicates ovulation.
In women with polycystic ovaries the LH to FSH ratio is often higher – for example 2:1, or even 3:1. With PCOS we often see the FSH in the range of about 4-8 as well – but often the LH levels are 10-20.
Studies have shown that 25 mUI/mLis the most reliable level at which to predict ovulation, but it's possible to ovulate with an LH level over 20 mUI/mL. Since LH levels can vary from person to person, some people with lower LH levels may just never quite turn an LH test positive, but they're still ovulating!
Low LH levels can mean that your pituitary gland isn't making the LH needed to spur changes in your body that support sexual development or reproduction.
Continuous evaluation by cycle phase indicated that recent daily stress was associated with lower total and free E2 and LH during the follicular phase and with lower progesterone and higher FSH during the luteal phase.
Levels of LH are low for most of the monthly menstrual cycle. However, around the middle of the cycle, when the developing egg reaches a certain size, LH levels surge to become very high. A woman is most fertile around this time, and people refer to this interval as the fertile window or fertile period.
The main symptom of infertility is not getting pregnant. There may be no other clear symptoms. Some women with infertility may have irregular menstrual periods or no periods. And some men may have some symptoms of hormonal problems, such as changes in hair growth or sexual function.
Test any time between the hours of 10:00 AM – 8:00 PM, as this is when LH levels tend to be highest. You'll just want to make sure you avoid using first morning urine.
A normal LH: FSH ratio is between 1 to 2, depending on the phase of your menstrual cycle. An elevated FSH to LH ratio is a sign of diminished ovarian reserve, which means you may not have many eggs left, or their quality may be poor. An elevated LH to FSH ratio is common in women with PCOS.
For men, some of these signs include a healthy sperm count, high-quality sperm that can swim quickly and easily, and a good balance of hormones. For women, good fertility indicators include regular ovulation, the presence of cervical mucus, and the regularity of menstrual cycles.
Weak or suboptimal ovulation refers to having a hormonal disbalance, mainly concerning your progesterone and estrogen levels. A hormonal disbalance caused by weak ovulation can lead to missed and irregular ovulation and can be the reason behind your inability to get pregnant.
High tonic serum concentrations of luteinizing hormone (LH) in the follicular phase, frequently witnessed in polycystic ovary syndrome, have been associated with decreased reproductive function.
What is an ideal LH level if you're trying to conceive?
The main symptom of infertility is the inability to get pregnant. A menstrual cycle that's too long (35 days or more), too short (less than 21 days), irregular or absent can mean that you're not ovulating. There might be no other signs or symptoms.
The "3 over 6 rule" in fertility awareness methods (FAMs) confirms ovulation by identifying a sustained rise in your Basal Body Temperature (BBT): it requires three consecutive days of temperatures higher than the six days before them, with the third high temperature being at least 0.2°C (0.4°F) above the preceding six days' highest point, marking the end of the fertile window for avoiding pregnancy and confirming ovulation has occurred. This rule, used with other signs like cervical mucus, helps pinpoint the infertile phase after ovulation, but it's not an exact science and requires careful daily tracking.
In short, without an LH surge, you don't ovulate and you can't get pregnant in that cycle. If you're trying to conceive, having no LH surge for extended periods of time can lead to fertility problems.
Early signs of ovulation problems include irregular menstrual cycles, lack of cervical mucus, and hormonal acne. These signs may indicate hormone level imbalances that affect egg release and reduce fertility.
However, there are several methods that may help you to balance your hormones, which in turn helps to increase your odds of ovulation. This includes getting plenty of sleep, maintaining a healthy diet, exercising regularly, and minimizing stress levels.
As ovulation nears, your discharge will become wet, stretchy and slippery. The most common analogy for super fertile cervical mucus is looking and feeling like raw egg whites. If you see that texture, you'll know you're at your most fertile time.
Aside from having trouble conceiving, symptoms can vary significantly from one person to another. Depending on the reason for infertility, sometimes women may experience pelvic pain, heavy periods, skipped periods or unpredictable vaginal bleeding. It's important to discuss any unusual symptoms with your doctor.
What's off-limits?
A simple blood test for assessing ovarian reserve, with results to your referring doctor in 2 business days. The Anti-Müllerian Hormone (AMH) is a biomarker produced by antral and pre-antral follicles for assessing the ovarian reserve and is therefore essential to evaluate potential fertility.