LH Levels Blood Test
Below is a plain-language overview of the lh levels blood test. An LH (luteinizing hormone) blood test measures the level of a hormone made by the pituitary gland that helps control the reproductive system. It is ordered to evaluate fertility, menstrual problems, puberty timing, or pituitary function.
- Sample type
- blood
- Category
- Hormone
- Turnaround
- 1-3 business days
- Price
- $49
- Referral
- Not required
An LH (luteinizing hormone) blood test measures the level of a hormone made by the pituitary gland that helps control the reproductive system. It is ordered to evaluate fertility, menstrual problems, puberty timing, or pituitary function.
What it measures
- Luteinizing hormone (LH) — The main hormone measured; it triggers ovulation in women and testosterone production in men.
- Follicle-stimulating hormone (FSH) — Often checked alongside LH because the two work together in reproduction.
- Estradiol — A form of estrogen sometimes measured with LH in women.
- Testosterone — A male hormone sometimes measured with LH in men.
- Progesterone — Sometimes checked to confirm whether ovulation has occurred.
Who it is for
A clinician such as a primary care doctor, gynecologist, urologist, or endocrinologist typically orders this test. It may also be ordered as part of a fertility evaluation.
Preparation
No fasting is usually required. Timing can matter, so follow your clinician's instructions about which day of your cycle to test, if applicable.
Results and what they mean
Results are reported as a number with a reference range that varies by age, sex, and menstrual cycle phase. A clinician interprets your result alongside symptoms and other tests. This is general information, not medical advice; discuss your results with a qualified healthcare professional.
How to order this test
- Choose the test and place a confidential order online.
- Select a certified collection site and pick a time that suits you.
- Have your specimen collected — most draws take only a few minutes.
- Review results in a secure portal, typically within 1–3 days.
Preparation, hours, and pricing vary by site; confirm details directly with the lab before your visit.
Availability by state
Direct-access online ordering for the lh levels blood test is available in most states. It is currently unavailable in 6 states:
Everywhere else you can order confidentially and collect your sample at a certified site. Browse by state →
Frequently asked questions
Do I need to fast before an LH blood test?
Fasting is not typically required. Your clinician will tell you if any other preparation is needed.
When during my cycle should I have this test?
Timing depends on why the test is ordered. Your clinician may ask you to test on a specific day of your cycle.
Can I take my medications before the test?
Some medications can affect LH levels. Ask your clinician or pharmacist whether to adjust anything beforehand.
How long until I get results?
Results are usually available within 1 to 3 business days, though this can vary by lab.