What Are Testicular Cancer Tumour Markers?
Testicular cancer tumour markers — AFP (Alpha-Fetoprotein), hCG (Human Chorionic Gonadotropin) and LDH (Lactate Dehydrogenase) — are proteins and enzymes that can appear at elevated levels in the blood in association with certain types of testicular cancer. These three biomarkers are routinely used within UK oncology and diagnostic pathways to help identify, monitor and contextualise changes in male health.
Understanding what these markers are, what their levels may suggest, and why proactive testing matters is an important step in supporting your long-term health awareness.
Understanding Each Biomarker: AFP, hCG and LDH
Alpha-Fetoprotein (AFP)
AFP is a protein primarily produced by the liver and yolk sac cells during foetal development. In healthy adult males, AFP levels are typically very low. Elevated AFP in adult men can sometimes be associated with non-seminomatous germ cell tumours (NSGCTs), which are a subtype of testicular cancer.
It is important to note that AFP can also be raised in other conditions, such as liver disease or hepatitis, which is why results must always be interpreted alongside clinical context and appropriate healthcare guidance.
Practical Insight: An elevated AFP result alone does not confirm cancer. It may indicate a need for further clinical investigation through appropriate healthcare services.
Human Chorionic Gonadotropin (hCG)
hCG is a hormone commonly associated with pregnancy, but it can also be produced by certain testicular tumours. Both seminomas and non-seminomatous tumours may produce hCG, making it a broadly relevant marker in the testicular cancer monitoring landscape.
In healthy adult males, hCG levels are expected to be very low or undetectable. A raised hCG in a male may sometimes highlight a need for further evaluation.
Practical Insight: Beta-hCG (the specific subunit measured in male tumour marker panels) can occasionally be mildly elevated due to other factors such as hypogonadism, so professional clinical interpretation is always recommended.
Lactate Dehydrogenase (LDH)
LDH is an enzyme found in many tissues throughout the body. While it is less specific than AFP or hCG as a standalone marker, LDH levels may sometimes be elevated in the presence of significant tissue damage or more advanced disease. In the context of testicular cancer, elevated LDH can sometimes suggest more widespread cellular activity.
LDH is also associated with a range of other conditions including liver disease, heart conditions and muscle injury, reinforcing the importance of a holistic blood panel rather than isolated interpretation.
Practical Insight: LDH is best understood as a supporting marker within a broader clinical picture rather than as a diagnostic tool in isolation.
Tumour Marker Quick Reference Table
| Marker | Full Name | Primary Association | Normal Range (Adult Male) | Also Elevated In |
|---|---|---|---|---|
| AFP | Alpha-Fetoprotein | Non-seminomatous germ cell tumours | < 10 ng/mL (lab-dependent) | Liver disease, hepatitis, cirrhosis |
| hCG | Human Chorionic Gonadotropin | Seminomas and NSGCTs | < 5 mIU/mL (lab-dependent) | Hypogonadism, certain medications |
| LDH | Lactate Dehydrogenase | Advanced disease, tissue turnover | 140–280 U/L (lab-dependent) | Muscle injury, heart conditions, anaemia |
Reference ranges may vary between laboratories. Always discuss results with an appropriate healthcare professional.
Who Should Consider a Tumour Marker Blood Test?
Tumour marker blood testing is not exclusively for those with a confirmed diagnosis. Awareness-led testing may be appropriate for:
Our men's health blood tests are available without a referral and provide a confidential, nurse-led testing experience in London.
How Often Should These Markers Be Tested?
For general health awareness purposes, there is no single universal frequency recommendation. The decision about how often to test should be informed by your individual circumstances:
Our private blood testing services in London allow you to arrange testing at a frequency that suits your health awareness goals.
What Do Your Results Mean?
What Elevated Results May Suggest
Elevated levels of AFP, hCG or LDH do not automatically indicate cancer. These markers can be raised for a range of reasons, and a single abnormal result should always be considered in context.
A result that falls outside the reference range may:
What Normal Results Mean
A result within the normal reference range can provide a useful baseline and may offer reassurance, though it does not completely exclude all conditions. Tumour markers are one part of a broader diagnostic picture.
Practical Insight: Sharing your results with an appropriate healthcare professional ensures they are interpreted accurately alongside your full health history.
You can learn more about how blood results are reported through our blood test results explained section.
Testicular Cancer Tumour Markers: A London Perspective
Testicular cancer is the most common cancer in men aged 15 to 49 in the UK, according to Cancer Research UK. Despite this, awareness of testicular health and available blood testing options remains lower than for other cancers.
In London, private blood testing offers an accessible and confidential route to health awareness alongside existing NHS pathways. Private testing does not replace NHS clinical assessment, and those with symptoms or clinical concerns should seek advice from their GP or appropriate healthcare professional.
Our nurse-led clinic at Private Blood Tests London provides professional, non-judgmental testing in a comfortable environment, with clear written results. We always recommend that results are shared with your GP or a qualified healthcare professional for clinical interpretation and any necessary follow-up.
For those who have already been seen within the NHS and are looking for supplementary awareness testing, private tumour marker panels can complement your existing care — though we do not offer clinical management, prescriptions or treatment.
Explore our tumour marker blood tests to find out more about the specific panels we offer.
Frequently Asked Questions: AFP, hCG and LDH in Testicular Cancer
1. What are testicular cancer tumour markers and how do they work?
Testicular cancer tumour markers — AFP, hCG and LDH — are proteins and enzymes measured through a simple blood test. Certain testicular tumours can cause these substances to be released into the bloodstream at elevated levels. Measuring them provides a useful data point for awareness and monitoring, though they are not diagnostic tools on their own.
2. Can a blood test confirm testicular cancer?
No. A blood test measuring AFP, hCG and LDH cannot confirm or diagnose testicular cancer on its own. These markers can be elevated for a number of reasons. A confirmed diagnosis requires clinical assessment, imaging and specialist evaluation by an appropriate healthcare team. Our clinic provides testing and reporting only.
3. Is AFP, hCG and LDH testing available privately in London?
Yes. Private Blood Tests London offers tumour marker blood testing including AFP, hCG and LDH without requiring a GP referral. Testing is nurse-led, confidential and results are provided with a written report. You can book directly through our website.
4. What is the difference between AFP and hCG in testicular cancer?
AFP is primarily associated with non-seminomatous germ cell tumours (NSGCTs), while hCG can be elevated in both seminomas and NSGCTs. Together, these markers provide a more comprehensive screening picture. LDH is used as a supplementary marker and may be relevant in more advanced cases. All three are typically tested together in a tumour marker panel.
5. Are testicular cancer tumour marker tests painful?
The test involves a straightforward venous blood draw, usually from the arm, which takes only a few minutes. Most people experience only minimal discomfort, though individual experiences may vary. Our nurse-led team is experienced in making the process as comfortable and discreet as possible.
6. How long does it take to get results?
Results from tumour marker blood tests are typically available within one to three working days, depending on the specific panel and laboratory processing. Our team will communicate your results clearly in writing.
7. Can raised LDH levels be caused by something other than cancer?
Yes. LDH is a non-specific marker and can be elevated in many conditions including liver disease, heart conditions, anaemia, muscle injury and intense physical exercise. This is why LDH should always be interpreted alongside AFP and hCG, and in the context of your broader health history and professional clinical guidance.
8. At what age should men consider tumour marker testing?
Men between the ages of 15 and 45 represent the highest-risk demographic for testicular cancer in the UK. However, any adult male with concerns, a family history of testicular conditions or a personal risk factor may benefit from baseline awareness testing. There is no strict age cut-off for proactive health screening.
9. Do I need a GP referral to access tumour marker testing in London?
No. Our private blood testing clinic in London does not require a GP referral. You can book directly and receive your results in a timely, confidential manner. We recommend sharing results with your GP or appropriate healthcare provider for clinical interpretation.
10. Will testing interfere with my NHS care?
No. Private testing is entirely separate from NHS services. Some people choose to combine NHS care with private awareness testing for convenience and timeliness. Our results reports are clearly formatted to share with your existing clinical team if you wish.
Take a Proactive Step Towards Your Health Awareness
Understanding the role of AFP, hCG and LDH as testicular cancer tumour markers is a meaningful part of informed men's health awareness. Whether you are looking to establish a baseline, continue monitoring or simply want clarity and peace of mind, a private blood test offers a straightforward, confidential and accessible option.
Our nurse-led clinic in London provides professional, compliance-led testing with clear written results — no referral needed, no lengthy waits.
Book your tumour marker blood test today and take a calm, informed step towards understanding your health better.
About This Content
This article has been written by a senior UK medical content professional with expertise in preventive health screening, diagnostic blood testing and men's health education. Content is developed in line with UK medical editorial standards, GMC advertising guidance, CQC patient communication standards, and ASA advertising guidelines. All information is evidence-informed and intended to support health literacy, not to replace clinical care.
Educational Disclaimer
This article is intended for educational and informational purposes only. The content does not constitute medical advice, diagnosis or treatment. AFP, hCG and LDH blood test results should always be interpreted by an appropriate healthcare professional in the context of your individual health history and circumstances. If you are experiencing symptoms or have concerns about your health, please seek advice from a qualified healthcare professional or contact urgent medical services if symptoms are severe. Private Blood Tests London provides testing and reporting services only and does not offer prescriptions, clinical diagnosis or treatment.
Written Date: 27 July 2026 Next Review Date: 27 July 2027