Understanding Low HE4 Levels: Causes, Symptoms, and Next Steps
Learn about low HE4 levels, their causes, symptoms, and when to consult a doctor. Understand how HE4 is used with CA-125 to assess ovarian cancer risk.
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is below the typical adult range (0–70 pmol/L).
is within the typical adult range (0–70 pmol/L).
is above the typical adult range (0–70 pmol/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 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.Human epididymis protein 4 (HE4) is a protein that can be measured in the blood. It is often used alongside another marker called CA-125 to help assess the risk of ovarian cancer. Understanding what low levels of HE4 mean can help you interpret your lab results and discuss them with your healthcare provider.
What is HE4 and why is it important?
HE4, or human epididymis protein 4, is a protein commonly found in the blood. It is particularly useful in evaluating the risk of ovarian cancer when used with another marker called CA-125. Together, these markers are part of the Risk of Ovarian Malignancy Algorithm (ROMA), which helps doctors assess whether an ovarian mass is likely to be cancerous. HE4 levels can vary depending on factors such as menopausal status, and there is no single reference range for all adults. Instead, the upper limit of normal is approximately 70 pmol/L for premenopausal women and approximately 140 pmol/L for postmenopausal women.
Causes of low HE4 levels
Low levels of HE4 are not typically a cause for concern on their own. HE4 is not used as a stand-alone screening test for ovarian cancer, so low levels do not necessarily indicate a health problem. However, understanding the context of HE4 levels is important. For instance, HE4 levels may naturally vary based on hormonal changes, age, and the specific assay used in testing. If you have an ovarian mass, your healthcare provider will interpret HE4 levels alongside CA-125 and other clinical findings.
Symptoms and implications of low HE4
Low HE4 levels do not usually cause symptoms themselves. Since HE4 is a marker used to help evaluate the risk of ovarian cancer, the primary concern is what the levels indicate rather than the levels themselves causing symptoms. If you have a low HE4 level, it is important to discuss with your healthcare provider what this means in the context of your overall health and any other test results you may have.
Understanding your HE4 results
HE4 levels are measured in picomoles per liter (pmol/L). The reference range can vary depending on menopausal status, with an upper limit of approximately 70 pmol/L before menopause and approximately 140 pmol/L after menopause. It is crucial to understand that these figures are guidelines, and your healthcare provider will consider your individual circumstances when interpreting your results. HE4 is most informative when used in conjunction with CA-125 as part of the ROMA score, which helps gauge the risk of ovarian cancer in women with an ovarian mass.
Frequently asked questions
What does a low HE4 level mean? Low HE4 levels are not usually a cause for concern and do not independently indicate a health issue. They are part of a broader assessment when evaluating the risk of ovarian cancer.
Can men have HE4 measured? While HE4 is primarily used in evaluating ovarian cancer risk in women, it can be measured in men, but it is not commonly used for this purpose.
Is HE4 used in routine cancer screening? No, HE4 is not used as a routine screening test for cancer. It is specifically used alongside CA-125 to assess the risk of ovarian cancer in women with an ovarian mass.
What should I do if my HE4 level is low? Discuss your results with your healthcare provider, who will interpret them in the context of your overall health and any other diagnostic tests.
Are there any lifestyle changes that can affect HE4 levels? There are no specific lifestyle changes known to affect HE4 levels significantly. It is important to follow general health guidelines and consult your healthcare provider for personalized advice.
When to see a doctor
You should see a doctor if you have concerns about your HE4 levels or if you have been diagnosed with an ovarian mass. Your healthcare provider can help interpret your results in the context of your overall health and other diagnostic tests. If you experience symptoms such as pelvic pain, bloating, or changes in menstrual cycles, it is important to seek medical advice.
This article provides information to help you understand HE4 levels. Always consult with your healthcare provider for personalized medical advice.