Understanding 17-Hydroxyprogesterone (17-OHP) Reference Range
Learn about 17-hydroxyprogesterone (17-OHP) levels, normal values in nmol/L, and their significance.
Check your result
Calculated in your browser - the number is not sent anywhere.
is below the typical adult range (0.6–6.7 nmol/L).
is within the typical adult range (0.6–6.7 nmol/L).
is above the typical adult range (0.6–6.7 nmol/L).
This number is very far from the usual range - check which unit your report uses.
A value this far outside the range is worth discussing with your doctor today.
What a low result usually means
What a high result usually means
The range printed on your own report comes first - it differs between laboratories. This is not a diagnosis.
See it next to the rest of your report - upload it for a free, private explanationFree. Sign up with your email - no password, we send you a code.17-Hydroxyprogesterone (17-OHP) is a hormone produced in the adrenal glands and gonads. It's an essential part of the pathway that produces cortisol and other hormones. Understanding its reference range is important because abnormalities can indicate certain health conditions, like congenital adrenal hyperplasia.
What is 17-Hydroxyprogesterone?
17-Hydroxyprogesterone (17-OHP) is a steroid hormone that serves as a precursor in the production of cortisol and androgens. It is produced in the adrenal glands and, to a lesser extent, in the gonads. The hormone is part of the body's response to stress and plays a role in the metabolism of carbohydrates, proteins, and fats.
Why 17-OHP Levels Matter
Monitoring 17-OHP levels can help diagnose and manage conditions such as congenital adrenal hyperplasia (CAH), a group of inherited disorders affecting the adrenal glands. Elevated levels of 17-OHP may indicate CAH, which can lead to an overproduction of androgens, causing abnormal growth and development in children and other symptoms in adults.
17-OHP Reference Range
The reference range for 17-OHP can vary based on several factors, including sex, age, menstrual cycle phase, and time of day. According to clinical guidelines, the normal range is approximately 0.6–6.7 nmol/L. However, specific values can differ:
- For men and non-pregnant women, the range typically falls within these values.
- Women may experience fluctuations in 17-OHP levels during different phases of their menstrual cycle.
- Levels can also vary throughout the day, usually peaking in the morning.
Factors Affecting 17-OHP Levels
Several factors can influence 17-OHP levels:
- Congenital adrenal hyperplasia (CAH): A genetic disorder that can cause elevated levels of 17-OHP.
- Time of day: Hormone levels can peak in the morning and decrease throughout the day.
- Menstrual cycle: Women may see variations in 17-OHP levels depending on their cycle phase.
Frequently asked questions
What does a high 17-OHP level indicate? Elevated levels of 17-OHP may suggest congenital adrenal hyperplasia (CAH), a condition that affects hormone production in the adrenal glands.
Can stress affect 17-OHP levels? Yes, stress can influence hormone levels, including 17-OHP, as it is part of the body's stress response system.
How is a 17-OHP test performed? The test is typically done using a blood sample drawn from a vein in your arm.
When to see a doctor
Consult a healthcare professional if you experience symptoms such as abnormal hair growth, severe acne, or irregular menstrual cycles, as these may be related to abnormal 17-OHP levels. If you have a family history of congenital adrenal hyperplasia or other endocrine disorders, discussing 17-OHP testing with your doctor can be beneficial.
Decisions about your health should always be made in consultation with your healthcare provider.