Progesterone Test

The Progesterone Test measures the level of progesterone in your blood to evaluate ovulation, fertility, and overall reproductive health. Progesterone is a steroid hormone primarily produced by the ovaries after ovulation, specifically by a structure called the corpus luteum. Smaller amounts are also produced by the adrenal glands, and during pregnancy, by the placenta.

Progesterone plays a central role in regulating the menstrual cycle. After ovulation, progesterone helps prepare the lining of the uterus for a potential pregnancy by promoting the development of a supportive endometrial environment. If pregnancy does not occur, progesterone levels decline, triggering menstruation. If pregnancy does occur, progesterone levels continue to rise to help maintain the uterine lining and support fetal development.

Because progesterone levels fluctuate throughout the menstrual cycle, timing of the test is important. In women with regular cycles, progesterone is often measured about one week before the expected start of menstruation to confirm whether ovulation has occurred. A sufficient rise in progesterone typically indicates successful ovulation.

This test is also widely used in fertility evaluations and early pregnancy assessments. Abnormal progesterone levels may help identify ovulatory disorders, luteal phase defects, potential miscarriage risk, or ectopic pregnancy when interpreted alongside other tests such as hCG and ultrasound.

What Is Included In This Test?

This test includes:

• Measurement of serum progesterone levels
• Clear numerical results for clinical interpretation

This test measures progesterone only and does not include hCG, estrogen, LH, or FSH.

Why Does This Test Matter?

Progesterone is essential for ovulation, implantation, and pregnancy maintenance. Without adequate progesterone production after ovulation, the uterine lining may not properly support implantation.

In fertility evaluations, progesterone testing helps confirm whether ovulation has occurred. A progesterone level above a certain threshold, commonly greater than 3 ng/mL in the mid luteal phase, usually indicates ovulation. This makes the test a key tool in assessing unexplained infertility.

During early pregnancy, progesterone levels may be evaluated in cases of vaginal bleeding to help assess pregnancy viability when used alongside hCG testing and ultrasound. In assisted reproduction, progesterone monitoring helps guide ovulation induction and hormone therapy protocols.

By understanding progesterone levels, individuals and healthcare providers can better evaluate menstrual health, fertility status, and early pregnancy support.

Who Should Consider This Test?

You may consider this test if you:

• Are trying to conceive
• Want to confirm ovulation
• Have irregular menstrual cycles
• Are experiencing infertility
• Are undergoing fertility treatment
• Have early pregnancy bleeding
• Have suspected luteal phase defects
• Are monitoring hormone therapy
• Have recurrent miscarriage concerns
• Want insight into overall reproductive hormone balance

Convenient, No-Appointment Testing

To complete your test:

1. Order online through our website
2. Use the lab locator to find a nearby testing location
3. Walk in; no appointment required
4. Access your results securely in your HealthLabs.com account within one to three business days

110% Price Guarantee!

If you find the same test for a lower price from a comparable provider, contact us. We not only match the price, we beat it by an additional 10 percent of the difference.