LH (Luteinizing Hormone) Test

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About Our LH (Luteinizing Hormone) Test

The Luteinizing Hormone, LH, test measures the level of LH in your blood to evaluate reproductive health and hormonal balance. LH is produced by the anterior pituitary gland and plays a vital role in regulating the reproductive system in both women and men.

In women, LH works alongside Follicle Stimulating Hormone to regulate the menstrual cycle. A surge in LH triggers ovulation, the release of an egg from the ovary. LH also supports the production of progesterone, a hormone essential for maintaining a healthy menstrual cycle and pregnancy. Because of this, balanced LH levels are critical for fertility and cycle regularity.

In men, LH stimulates the testes to produce testosterone, the hormone responsible for sperm production, muscle mass, bone strength, and sexual development. Abnormal LH levels in men can signal issues with testosterone production or testicular function.

When LH levels are too high or too low, it may indicate problems with the ovaries, testes, pituitary gland, or broader endocrine system. Measuring LH helps identify whether symptoms are linked to reproductive organ dysfunction or to hormonal signaling issues within the brain.

What Is Included In This Test?

This test includes:

Measurement of Luteinizing Hormone, LH, levels in the blood
Clear numerical results for clinical interpretation

This test measures LH only and does not include FSH, estrogen, progesterone, or testosterone.

Why Does This Test Matter?

LH is a key hormone in fertility, puberty, and hormonal regulation. In women of reproductive age, abnormal LH levels may interfere with ovulation and menstrual regularity. Elevated LH levels may be seen in women who are not ovulating, in menopause, or in certain genetic or ovarian conditions.

In men, high LH levels may suggest that the testes are not functioning properly, prompting the pituitary gland to release more LH in an attempt to stimulate testosterone production. Low LH levels may indicate a problem with the pituitary or hypothalamus.

This test is also valuable in evaluating early or delayed puberty in adolescents. Abnormal LH levels can help determine whether puberty related concerns are caused by central hormone regulation issues or primary reproductive organ disorders.

Understanding your LH level provides insight into reproductive function, hormone balance, and overall endocrine health, supporting timely diagnosis and appropriate treatment planning.

Who Should Consider This Test?

You may consider this test if you:

Have irregular or absent menstrual cycles
Are experiencing infertility
Suspect ovulation problems
Are evaluating menopause or perimenopause
Have symptoms of low testosterone
Have early or delayed puberty
Have suspected ovarian or testicular dysfunction
Have genetic conditions affecting reproductive health
Have suspected pituitary or hypothalamic disorders
Want to evaluate overall reproductive hormone balance

Convenient, No-Appointment Testing

To complete your test:

Order online through our website
Use the lab locator to find a nearby testing location
Walk in; no appointment required
Access your results securely in your HealthLabs.com account within one to three business days

110% Price Guarantee!

If you find the same test for a lower price from a comparable provider, contact us. We not only match the price, we beat it by an additional 10 percent of the difference.

Common Questions:

What does LH do in women?

LH triggers ovulation and supports progesterone production.

What does LH do in men?

LH stimulates the testes to produce testosterone.

Will anyone see my results besides me?

Your results are stored in your secure online account. They are not shared with anyone else. If you choose, you can print or download them to share with your own doctor.

Do I need to fast before this test?

Fasting is not required for this panel. You can eat and drink normally unless your doctor has given you other instructions.

Can I talk to someone about my results?

Yes. If your results come back abnormal or if you simply have questions, our team is here to support you. You can text our Patient Services team at 1800-579-3914.

Can I use insurance to pay for this test?

In order to ensure your privacy, we do not bill insurance directly, but you may use HSA or FSA funds. This keeps your results and testing completely private from insurers. We can also provide you with an itemized receipt for insurance reimbursement purposes if you need it.