LH:FSH Ratio

The LH:FSH Ratio test measures LH, FSH, and their ratio to evaluate hormonal balance and reproductive health.

3 parameters 4 HR Blood Yes

About Test

The LH:FSH Ratio Test measures the levels of two key reproductive hormones — luteinising hormone (LH) and follicle stimulating hormone (FSH) — in your blood, along with their ratio.

These hormones are essential for regulating the menstrual cycle, ovulation, and overall reproductive health. The balance between LH and FSH provides important insights into how well the reproductive system is functioning.

An abnormal LH:FSH ratio may indicate conditions such as polycystic ovary syndrome (PCOS), ovarian dysfunction, or hormonal imbalance.

This test is commonly used in the evaluation of infertility, irregular periods, and hormonal disorders.

Why This Test

The LH:FSH Ratio test helps assess hormonal balance and reproductive function.

Evaluate Irregular Periods

Helps identify hormonal causes of irregular or missed menstrual cycles.

Diagnose PCOS

An elevated LH:FSH ratio is commonly associated with polycystic ovary syndrome.

Assess Fertility Issues

Used in infertility evaluation to understand ovulation and hormonal status.

Check Hormonal Imbalance

Identifies imbalances affecting reproductive and endocrine health.

Who Should Take

This test is recommended for individuals with suspected hormonal or reproductive issues.

You may need this test if you:

Have irregular or absent periods
Are trying to conceive without success
Have symptoms of PCOS such as acne, weight gain, or excess hair growth
Have been advised hormonal evaluation by a doctor

Preparation

No special preparation is required before the LH:FSH Ratio test.

Fasting Requirement

Fasting is not required.

Best Time for Test

For women, the test is usually recommended on specific days of the menstrual cycle (commonly day 2–5). Follow your doctor’s advice for accurate results.

Medications

Inform your doctor about any hormonal medications or treatments you are taking.

Parameters

Luteinising Hormone (LH)
Follicle Stimulating Hormone (FSH)
LH:FSH Ratio

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Overview

Frequently Asked Questions

Q. What is LH:FSH ratio test used for?

It is used to evaluate hormonal balance and diagnose conditions like PCOS and infertility.

Q. What is a normal LH:FSH ratio?

A normal ratio is usually around 1:1, but it can vary based on age and condition.

Q. Is fasting required for LH:FSH test?

No, fasting is not required.

Q. When should LH:FSH test be done?

It is usually done in the early phase of the menstrual cycle (day 2–5) for accurate results.

Q. Can this test detect PCOS?

It can indicate PCOS, but diagnosis requires clinical evaluation and other tests.

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