Lab test
Progesterone Level Lab Test (Blood)
This blood test measures progesterone, a hormone produced mainly by the ovaries after ovulation.
- Typical price
- From $45
- Results
- 1-3 business days
- Preparation
- See preparation notes below
- Sample
- Blood draw or sample collection at a local center
About this test
This blood test measures progesterone, a hormone produced mainly by the ovaries after ovulation. Progesterone prepares and maintains the uterine lining, making it essential to the menstrual cycle and early pregnancy. During pregnancy it is also produced by the placenta. The test is used to confirm that ovulation has occurred, assess the phase of the menstrual cycle, support fertility evaluation, and help investigate irregular bleeding or suspected miscarriage risk. In monitoring fertility therapies, timing of the collection is especially important. Results are interpreted according to cycle day or pregnancy status.
What this test measures
- Progesterone A hormone produced after ovulation that supports the uterine lining and early pregnancy.
Who this test may be right for
- Women being evaluated for infertility or ovulation
- Those with irregular or unexplained vaginal bleeding
- Women monitoring fertility therapy
- Individuals with a history of early pregnancy loss
Before your visit
- Collection is usually timed to the latter part of the menstrual cycle to assess ovulation; confirm the day with your provider
- Report hormone or fertility medications to the laboratory
- Follow any additional instructions that come with your order
Understanding your results
Progesterone is compared against reference ranges that depend on cycle phase or pregnancy. A value drawn after ovulation that is above a certain threshold is consistent with ovulation, while a low value may suggest that ovulation did not occur or that progesterone support is reduced. During pregnancy, different ranges apply. Because timing is critical, a healthcare provider should interpret the result in relation to the day it was collected and the wider clinical picture.
Order this test online
- Buy online in a few minutes - no doctor's visit needed for most tests.
- Sample collection at a patient service center near you.
- Results are typically ready within 1-3 business days.
- Secure, lab-reviewed results delivered to your account.
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Questions people ask
Why does the day of my cycle matter for a progesterone test?
Progesterone rises after ovulation and falls before the next period, so the collection day determines which reference range applies and whether the result is meaningful.
Can progesterone testing confirm ovulation?
A sufficiently elevated progesterone level after ovulation is consistent with ovulation, and a healthcare provider uses it with cycle history and other tests.
Is a low progesterone level a cause of miscarriage?
Low progesterone is one factor that may be investigated in early pregnancy loss, but it is only one part of a broader evaluation by a healthcare provider.
Do I need to fast for a progesterone test?
Fasting is generally not required, but you should follow the instructions that come with your order.
What does the Progesterone Level Lab Test (Blood) measure?
This blood test measures levels of the hormone progesterone, which plays a key role in determining menstrual cycle phases, monitoring fertility therapies &.
Do I need to fast before this test?
Follow the lab's instructions.
How long do results take?
Most Progesterone Level Lab Test (Blood) results are released in 1-3 business days. Specialty testing can take longer.
Is this test right for me?
This page is educational and not medical advice. Talk to a licensed healthcare provider about which tests fit your situation.
LabBookings is an independent directory. We compare test details and pricing information, but we are not a laboratory and we do not perform testing or provide medical advice. Always talk to a licensed healthcare provider about your results and treatment.
Laboratory services are provided by independent, CLIA-certified testing partners. Availability, pricing, and turnaround times can vary by location and are confirmed at checkout.