Progesterone
What is being analysed?
Progesterone is a hormone produced primarily by the ovaries in women and in smaller amounts by the adrenal glands in both men and women. It plays a crucial role in the menstrual cycle and pregnancy.
What does the result mean?
The result of a progesterone analysis indicates the level of this hormone in the bloodstream. It helps in diagnosing various reproductive health issues, monitoring fertility treatments, and assessing pregnancy viability.
Why do the analysis?
Progesterone analysis is performed to evaluate fertility, track ovulation, diagnose menstrual irregularities, monitor pregnancy, assess the risk of miscarriage, and evaluate certain conditions like adrenal gland disorders and ovarian cancer.
When to do the analysis?
The timing of progesterone analysis depends on its intended purpose. For fertility tracking, it is usually done around day 21 of a 28-day menstrual cycle to assess ovulation. During pregnancy, progesterone levels may be monitored regularly to ensure healthy gestation.
What sample is required?
A blood sample is required for progesterone analysis. It is usually drawn from a vein in the arm using a needle.
Is any type of prior preparation necessary?
No special preparation is usually required before a progesterone test. However, it's essential to inform your healthcare provider about any medications or supplements you are taking, as they may interfere with the results.
How is it used?
Progesterone analysis helps healthcare providers make informed decisions regarding fertility treatments, pregnancy management, and diagnosing hormonal imbalances. It aids in adjusting hormone therapy dosages and assessing the effectiveness of treatment.
What are the normal values?
Normal progesterone levels vary depending on the stage of the menstrual cycle and whether a woman is pregnant. In the luteal phase of the menstrual cycle (after ovulation), normal progesterone levels typically range from 5 to 20 ng/mL. During pregnancy, progesterone levels increase significantly.
What does it mean to have altered values?
Abnormal progesterone levels may indicate various health issues. Low levels can suggest problems with ovulation, such as polycystic ovary syndrome (PCOS), or a risk of miscarriage during pregnancy. High levels may indicate conditions like ovarian cysts or hormone-producing tumors.
Progesterone Analysis Reference Values
Stage of Menstrual Cycle or Pregnancy |
Progesterone Levels (ng/mL) |
Follicular Phase (Day 1-14) |
< 1 |
Ovulation (Mid-cycle) |
2-25 |
Luteal Phase (Day 15-28) |
5-20 |
First Trimester of Pregnancy |
10-44 |
Second Trimester of Pregnancy |
19-82 |
Third Trimester of Pregnancy |
65-290 |
Please note that reference ranges may vary slightly between laboratories. Always consult with your healthcare provider for interpretation of your specific progesterone levels.