---
title: "What does a high LH mean?"
type: biomarker-interpretation
url: "https://www.test-well.com/biomarkers/lh/high"
biomarker: LH
direction: high
reference_range:
  - "Male, age 18+: 1.70 – 8.60 mIU/mL"
  - "Female, age 18+, varies by cycle phase: 1.90 – 12.5 mIU/mL"
reviewed_at: 2026-09-06
review_status: reviewed
date_published: 2026-09-05
---

# What does a high LH mean?

> High LH is expected briefly at ovulation and permanently after menopause. Outside those, an LH higher than FSH in a woman with irregular cycles is a classic (though not required) PCOS finding; high LH with high FSH indicates ovarian insufficiency. In men, high LH means the testes are failing to respond (primary hypogonadism).


## What is the normal range for LH?

- Male, age 18+: 1.70 – 8.60 mIU/mL
- Female, age 18+, varies by cycle phase: 1.90 – 12.5 mIU/mL

In women, often reflects menopause or PCOS. In men, can reflect testicular issues.

## What are the common causes of high LH?

1. Mid-cycle ovulation surge
2. Menopause or primary ovarian insufficiency
3. PCOS (LH:FSH ratio often >2)
4. Men: primary testicular failure
5. Rare: pituitary tumors

## What symptoms go with high LH?

- Irregular periods, acne, hair growth (PCOS)
- Hot flashes, absent periods (ovarian insufficiency)

## What do clinicians usually check next?

- FSH, estradiol, testosterone and DHEA-S on cycle days 2–5
- Pelvic ultrasound when PCOS is suspected
- Men: testosterone, semen analysis

Follow-up tests at TestWell: [FSH (Follicle Stimulating Hormone)](https://www.test-well.com/tests/fsh) ($29.99), [Estradiol (E2)](https://www.test-well.com/tests/estradiol) ($35.99).

## How do you recheck LH?

| Test or panel | Type | Price | Fasting | Results |
| --- | --- | --- | --- | --- |
| [Women's Fertility Essentials](https://www.test-well.com/tests/female-fertility-panel) | Panel (5 tests) | $119.99 | No | 3–5 business days |
| [Menopause Assessment Panel](https://www.test-well.com/tests/menopause-panel) | Panel (8 tests) | $179.99 | No | 2–4 business days |
| [Women's Hormone Panel](https://www.test-well.com/tests/womens-hormone-panel) | Panel (11 tests) | $239.99 | No | 3–5 business days |
| [LH (Luteinizing Hormone)](https://www.test-well.com/tests/luteinizing-hormone) | Test | $36.99 | No | 1–3 business days |

Plus one $6 lab processing fee per order; physician authorization included.

## Common questions

### Does a high LH:FSH ratio prove PCOS?

No — it supports the diagnosis but isn't required or specific. PCOS is diagnosed on cycle history, androgen signs or levels, and ultrasound.

## Related

- [What does a low LH mean?](https://www.test-well.com/biomarkers/lh/low)
- [LH reference ranges](https://www.test-well.com/biomarkers/lh)
- [Total Testosterone reference range](https://www.test-well.com/biomarkers/total-testosterone)
- [Free Testosterone reference range](https://www.test-well.com/biomarkers/free-testosterone)
- [SHBG reference range](https://www.test-well.com/biomarkers/shbg)

## Sources

- [Mayo Clinic Labs](https://www.mayocliniclabs.com/test-catalog/overview/8663)

---

Medically reviewed by Youmna DiStefano, MD (Medical Reviewer, TestWell); last reviewed 2026-09-06. Review policy: https://www.test-well.com/editorial-policy

Canonical page: https://www.test-well.com/biomarkers/lh/high
Machine-readable catalog: https://www.test-well.com/api/catalog.json · MCP server: https://www.test-well.com/mcp · Overview for agents: https://www.test-well.com/llms.txt

Prices are cash-pay, in USD, and include physician authorization; every order adds one flat $6 lab processing fee. Educational content is not a diagnosis — discuss results with a clinician.