Understanding HE4 and Related Markers in Lab Results

Human epididymis protein 4 (HE4) is a protein that can be measured in the blood and is often used alongside another marker, CA-125, to assess the risk of ovarian cancer. Understanding these markers together can provide valuable insights into your health, especially if you have an ovarian mass.

What is HE4?

HE4, or human epididymis protein 4, is a protein that is often elevated in women with ovarian cancer. It is measured in picomoles per liter (pmol/L) in the blood. Unlike some other markers, HE4 is not a stand-alone screening tool for ovarian cancer but is used in conjunction with the CA-125 marker to calculate the Risk of Ovarian Malignancy Algorithm (ROMA) score. This score helps determine the likelihood that an ovarian mass is cancerous.

Why HE4 and CA-125 are Used Together

HE4 and CA-125 are used together because they provide a more comprehensive assessment of the risk of ovarian cancer. While CA-125 is a well-known marker for ovarian cancer, it is not specific and can be elevated in other conditions. HE4, on the other hand, is less likely to be elevated in non-cancerous conditions. By using both markers, healthcare providers can better differentiate between benign and malignant ovarian masses.

Interpreting HE4 Levels

The interpretation of HE4 levels can vary based on several factors, including menopausal status. HE4 levels are usually below approximately 70 pmol/L in premenopausal women and below approximately 140 pmol/L in postmenopausal women. However, there is no single adult reference range for HE4, and these levels should be interpreted in the context of other clinical information and tests, including the CA-125 and ROMA score.

Frequently Asked Questions

What is a normal HE4 level?
There is no single "normal" HE4 level for all adults. Levels can vary based on menopausal status, with ranges from 70 to 140 pmol/L being typical for different groups.

Can men have their HE4 levels tested?
HE4 is not typically used as a marker in men, as it is primarily used to assess the risk of ovarian cancer in women.

How is the ROMA score calculated?
The ROMA score is calculated using both HE4 and CA-125 levels, along with the patient's menopausal status. This score helps assess the risk of ovarian cancer.

Is a high HE4 level always indicative of cancer?
Not necessarily. While elevated HE4 levels can indicate a higher risk of ovarian cancer, they should be interpreted alongside other tests and clinical findings.

When to see a doctor

If you have been tested for HE4 and CA-125 and have concerns about your results, it is important to discuss them with your healthcare provider. They can interpret the results in the context of your overall health and any symptoms you may be experiencing. If you have an ovarian mass or symptoms such as abdominal pain or bloating, it is especially important to seek medical advice.

Please remember, this information is for educational purposes and any medical decisions should be made in consultation with your healthcare provider.