Test library
Luteinizing Hormone Level Test
The LH Levels Blood Test measures luteinizing hormone, a pituitary hormone that drives ovulation in women and testosterone production in men. It is used to evaluate fertility, puberty, and pituitary function.
Order LH Levels Blood Test
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order LH Levels Blood Test- Typical turnaround
- 1-3 business days
- Starting price
- From $49
- Results
- Confidential, online
Quick answer
The LH Blood Test measures luteinizing hormone, a hormone released by the pituitary gland. In women, an LH surge triggers ovulation, and levels change across the menstrual cycle. In men, LH signals the testes to produce testosterone. The test is used to evaluate fertility concerns, irregular cycles, delayed or early puberty, and pituitary or gonadal disorders.
What this test measures
Luteinizing hormone is part of the reproductive hormone system controlled by the brain. The pituitary releases it in pulses, and levels rise and fall across the menstrual cycle in women. In men, levels are steadier but still fluctuate, and both patterns matter for interpretation.
Because LH changes over the cycle, sample timing matters for women. Providers often test LH alongside follicle-stimulating hormone, estradiol, or testosterone. A single value is interpreted relative to the cycle day, medications, and the clinical question, so context is essential for accurate assessment.
Testing may be ordered when evaluating infertility, irregular or absent periods, signs of pituitary problems, or delayed puberty. Results are always read with other hormones and the clinical picture. A qualified healthcare provider should interpret the findings and decide whether further testing is needed.
- Luteinizing hormone (LH) level
- Follicle-stimulating hormone (FSH) when ordered together
- Estradiol when ordered together
- Testosterone when ordered together
- Progesterone when cycle timing requires it
- Prolactin or thyroid markers when included
Why people order this test
- Evaluate fertility concerns in women or men
- Investigate irregular or absent menstrual cycles
- Assess delayed or early puberty
- Add information when pituitary function is being assessed
- Monitor response to fertility treatment with a clinician
- Interpret LH alongside other reproductive hormones
How to prepare
The timing of the sample matters for women and depends on the cycle day, so follow the instructions provided with the test order. No fasting is usually required, and tell the provider about any hormone medications.
Understanding your results
Results are usually available within one to three business days. LH is interpreted with the day of the cycle, other hormone levels, and the clinical question. A qualified healthcare provider should explain what the value means.
Luteinizing Hormone Level Test by state
Alabama
Luteinizing Hormone Level Test across Alabama.
Alaska
Luteinizing Hormone Level Test across Alaska.
Arizona
Luteinizing Hormone Level Test across Arizona.
Arkansas
Luteinizing Hormone Level Test across Arkansas.
California
Luteinizing Hormone Level Test across California.
Colorado
Luteinizing Hormone Level Test across Colorado.
Connecticut
Luteinizing Hormone Level Test across Connecticut.
Delaware
Luteinizing Hormone Level Test across Delaware.
Florida
Luteinizing Hormone Level Test across Florida.
Georgia
Luteinizing Hormone Level Test across Georgia.
Hawaii
Luteinizing Hormone Level Test across Hawaii.
Idaho
Luteinizing Hormone Level Test across Idaho.
Related tests
12 Panel Drug Test (Drugs of Abuse Testing), Hair
Compare 12 Panel Drug Test (Drugs of Abuse Testing), Hair options and order online.
12 Panel Drug Testing
Compare 12 Panel Drug Testing options and order online.
7 Panel Drug Test (Drugs of Abuse Testing), Hair
Compare 7 Panel Drug Test (Drugs of Abuse Testing), Hair options and order online.
9 Panel Drug Test
Compare 9 Panel Drug Test options and order online.
9 Panel Drug Test (Drugs of Abuse Testing), Hair
Compare 9 Panel Drug Test (Drugs of Abuse Testing), Hair options and order online.
Frequently Asked Questions
What does luteinizing hormone do?
In women, LH triggers ovulation and supports the menstrual cycle. In men, it signals the testes to produce testosterone.
When should the LH test be done?
Timing depends on the reason for testing. For cycle evaluation, a provider often requests the sample on a specific day of the menstrual cycle.
Do I need to fast for an LH test?
No fasting is usually required. Follow any specific instructions provided with the test order.
Can medications affect LH results?
Yes. Hormone medications and some other treatments can influence LH levels, so tell the testing provider what you are taking.
How is LH used in fertility evaluation?
LH is interpreted with other hormones to assess ovulation, ovarian reserve, and pituitary signaling. A clinician uses the pattern to guide further evaluation.
Ready to get tested?
Order online and visit a collection site near you, or choose a mail-in kit. No referral and no insurance required.
Reviewed by the LabOrdering Editorial Team
Every page on this site is reviewed for clarity, sourcing, and accuracy. We update our library as testing options, collection networks, and accreditation standards change.