Order LH (Luteinizing Hormone) Blood Test from JustLabs for $9 ($27 all-in for a single-test order: $9 + one $18 lab & physician order fee per order). Price includes lab processing at Quest Diagnostics. No insurance required.

LH (Luteinizing Hormone) Blood Test

LH

LH is a key reproductive hormone that triggers ovulation in women and stimulates testosterone production in men. Testing LH helps evaluate fertility, menstrual irregularities, and pituitary function.

Luteinizing Hormone (LH) is produced by the pituitary gland and plays a crucial role in reproductive function for both sexes. In women, LH triggers ovulation - the mid-cycle surge causes the release of a mature egg from the ovary. In men, LH stimulates the Leydig cells in the testes to produce testosterone.

LH works in partnership with FSH (Follicle Stimulating Hormone) to regulate the menstrual cycle and fertility. The ratio between LH and FSH provides important diagnostic information, particularly for conditions like polycystic ovary syndrome (PCOS).

Testing LH is valuable for investigating infertility, menstrual irregularities, early or delayed puberty, and suspected pituitary disorders. In conjunction with other hormone tests, LH helps create a complete picture of reproductive health.

Price

$9

All-in

$27

incl. $18 lab & physician fee

Results

1-2 business days

Fasting

Not Required

What's Measured

LH

What This Test Measures

This test measures the concentration of luteinizing hormone in your blood, reported in mIU/mL. Normal LH varies dramatically by sex and menstrual cycle phase. Women: Follicular phase 2-15 mIU/mL, Mid-cycle peak 22-105 mIU/mL, Luteal phase 0.6-19 mIU/mL, Postmenopausal 15-62 mIU/mL. Men: 1.5-9.3 mIU/mL.

Who Should Consider This Test

Women investigating infertility or menstrual irregularities, those tracking ovulation for conception, women with suspected PCOS, men with low testosterone symptoms, individuals with delayed or precocious puberty, and anyone evaluating pituitary function.

Health Insights

Conditions Screened

Ovulatory disordersPCOS (with FSH ratio)MenopausePrimary ovarian insufficiencyMale hypogonadismPituitary disordersHypothalamic dysfunctionPrecocious or delayed puberty

Related Symptoms

Difficulty conceivingIrregular or absent periodsSigns of PCOS (acne, excess hair growth)Low libido or erectile dysfunctionHot flashes or menopausal symptomsDelayed pubertyEarly pubertyFatigue

When to Get Tested

No fasting required. For fertility and PCOS assessment, test on cycle days 2-4 (early follicular phase). For ovulation detection, test mid-cycle. LH can be tested any time for men or postmenopausal women.

No fasting needed. How to prepare for your blood test →

Full guide: TRT blood work, what to test and when →

Understanding Your Results

LH interpretation depends on sex and cycle timing. In women, elevated LH relative to FSH (>2:1 ratio) on day 3 suggests PCOS. Very high LH indicates menopause or ovarian failure. In men, high LH with low testosterone suggests primary testicular failure; low LH with low testosterone suggests pituitary/hypothalamic issues.

What to Expect

After placing your order, we send it straight to Quest Diagnostics — there is no consent form to sign and no partner email to wait for. Your requisition is usually ready to download from your dashboard within about an hour, and you can book your blood draw at any Quest Diagnostics location.

The blood draw typically takes just a few minutes. Results are usually available within 1-2 business days and will appear in your secure JustLabs dashboard.

Our results include reference ranges and easy-to-understand indicators showing whether your values are within normal limits.

How much does the LH test cost?

The LH test costs $9 at JustLabs — $27 all-in, since the $18 lab & physician order fee is charged once per order, however many tests you add. The price is fixed before your blood draw; no insurance or doctor visit needed.

OptionPriceOrder all-inNotes
LH at JustLabsDrawn at Quest Diagnostics$9$27Includes the one $18 fee, charged once per order

Paying with an HSA or FSA? See which lab tests qualify

Frequently Asked Questions

Fertility1 biomarker

Hospital cash price: $150–$300

$9

+ $18 order fee · $27 all-in

  • Results in 1-2 business days
  • No fasting required
  • Physician order included

No insurance needed · HSA/FSA eligible

  • Physician-ordered
  • CLIA-certified Quest lab
  • Drawn at Quest Diagnostics

Need Help Choosing?

Not sure if this is the right test for you? Take our quick questionnaire.

Take the Quiz

Related Tests

Explore More

Related Articles

$9

+ $18 order fee · $27 all-in