Alpha Fetoprotein (AFP)
Alpha-Fetoprotein (AFP) is a protein produced mainly by the fetal liver. Elevated levels in adults may indicate certain liver conditions or be used to monitor specific cancers. A simple blood draw is all that is required: no special preparation needed.
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What the Alpha Fetoprotein (AFP) test tells you
Alpha-fetoprotein is a protein made in large quantities by the liver and yolk sac of a developing baby, where it plays a role comparable to that of albumin in an adult. Production falls away sharply after birth, and in adults only traces remain. Because the healthy adult liver has largely stopped making it, cells that revert to a more primitive state, as some liver cancers and germ-cell tumours do, can begin producing it again. That is what makes AFP useful, and it is also why it must be read carefully.
AFP is not a screening test for healthy people, and it should not be used to check for cancer in someone with no symptoms and no diagnosis. Its established roles are narrower. In people who already have cirrhosis or long-standing hepatitis B or C, AFP measured at intervals alongside ultrasound imaging is part of an organised surveillance programme. In germ-cell tumours of the testis or ovary, AFP together with beta hCG helps classify the tumour, judge how it is responding to chemotherapy, and detect recurrence. In both settings the trend across serial samples carries far more meaning than any single value.
A raised AFP very often has a harmless or non-cancerous explanation. In pregnancy AFP rises as a matter of course, and pregnancy values are interpreted against an entirely separate framework as part of screening for fetal conditions. Outside pregnancy, active hepatitis, cirrhosis and liver tissue regenerating after injury all push it up without any tumour being present. Equally important in the other direction, a normal AFP does not exclude cancer. A substantial share of liver cancers produce little or none of it, which is why surveillance pairs the blood test with imaging rather than relying on either alone. Your doctor reads AFP as one piece of a wider picture, never as an answer on its own.
Your doctor may recommend AFP testing if you have chronic hepatitis B or C, cirrhosis, or are being monitored after treatment for liver or germ-cell cancers. It is also part of prenatal screening panels.
- Liver cancer surveillance
In people with cirrhosis or chronic viral hepatitis, serial AFP alongside ultrasound forms part of an organised programme for watching the liver over time.
- Germ-cell tumour management
AFP helps classify testicular and ovarian germ-cell tumours and shows whether chemotherapy is having the intended effect.
- Tracking treatment response
After treatment of a tumour that produces AFP, a falling trend supports response while a rising one prompts reassessment by your doctor.
- Watching for recurrence
During follow-up, a sustained rise can appear before a recurrence becomes visible on scans or causes any symptoms.
Reasons your doctor may request the Alpha Fetoprotein (AFP) test
Your doctor may order this test for any of the reasons below. Some are routine checks, others follow specific symptoms or an earlier result.
Liver surveillance
- Long-standing hepatitis B or hepatitis C infection under organised surveillance.
- Cirrhosis from any cause, as part of a monitoring programme set by your doctor.
- A liver lesion already found on ultrasound, CT or MRI that needs further characterising.
Germ-cell tumours
- Diagnosis, staging and follow-up of a germ-cell tumour of the testis or ovary.
Follow-up & pregnancy screening
- Monitoring after treatment for liver or germ-cell cancer, to watch for recurrence.
- As part of prenatal screening in pregnancy, where it is interpreted against pregnancy-specific criteria.
A result in the Normal band, reported in ng/mL, is the expected finding in a non-pregnant adult and carries no independent significance. It does not exclude liver cancer, since a substantial share of these tumours produce little AFP, which is why surveillance pairs the blood test with imaging. A result in the High band calls for context rather than alarm: in pregnancy a rise is entirely normal and is assessed against a separate framework, and outside pregnancy active hepatitis, cirrhosis and liver tissue regenerating after injury commonly raise it with no cancer present. Hepatocellular carcinoma and germ-cell tumours of the testis or ovary are the malignant causes your doctor weighs. The trend across repeated samples is far more informative than any single value. Your doctor interprets AFP alongside imaging, your liver history and your symptoms.
Medically reviewed by Dr Nirupama Sabhapathy
Ranges are a guide: your physician interprets your result alongside your symptoms and history.
What a higher result can point to
- Pregnancy, where a rise is entirely normal and expected and is assessed against separate pregnancy criteria.
- Active hepatitis, cirrhosis, and liver tissue regenerating after injury, all of which raise AFP with no cancer present.
- Hepatocellular carcinoma, the commonest malignant cause in adults.
- Germ-cell tumours of the testis or ovary, particularly those containing yolk-sac elements.
- Cancer that has spread to the liver from elsewhere, in some cases.
These are possibilities, not diagnoses. A single value outside the reference range is interpreted alongside your symptoms, history and other tests: your doctor decides what it means for you.
What this test cannot tell you
- AFP is not a screening test for the general population; used in people without symptoms or a diagnosis it produces false alarms and unnecessary investigation.
- A normal AFP does not exclude liver cancer, because a substantial proportion of these tumours produce little or none of it.
- Non-cancerous liver disease and normal pregnancy both raise AFP, so a single raised value establishes nothing on its own.
- A low result in a non-pregnant adult is the expected finding and carries no independent significance.
Risks of the blood draw
- Mild bruising or brief soreness where the needle went in.
- Occasional lightheadedness, which settles after a few minutes of rest.
- Bleeding or infection at the site, which is rare with sterile single-use equipment.
- 1AFP is a fetal protein that healthy adults make only in traces.
- 2It is not a cancer screening test for people without symptoms or a diagnosis.
- 3Pregnancy, hepatitis and other liver disease commonly raise it without any cancer being present.
- 4A normal result does not rule cancer out, which is why surveillance pairs it with imaging.
- 5The trend across repeated samples is far more informative than any single value.
Alpha Fetoprotein (AFP) also comes in these focused packages, which pair it with the tests usually read alongside it.
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Frequently Asked Questions
Everything you need to know about the Alpha Fetoprotein (AFP) test. Can't find what you're looking for?
Talk to our team→Our laboratory reports 0 to 8 ng/mL as normal for a non-pregnant adult. Results from 9 ng/mL upwards are reported as high and need context: pregnancy, active hepatitis, cirrhosis and liver tissue regenerating after injury all raise AFP without any cancer, while hepatocellular carcinoma and germ-cell tumours are the malignant causes your doctor weighs.
AFP is made mainly by the fetal liver, so it rises normally in the mother's blood during pregnancy. A raised result in a pregnant woman is expected and is interpreted against completely different pregnancy criteria, not the adult range. Tell the team before the test if you are or might be pregnant, so the result is not read as abnormal.
After treatment for a tumour that produces AFP, such as hepatocellular carcinoma or a germ-cell tumour, the test is repeated at intervals to follow response and watch for recurrence. A stable or falling trend is reassuring, while a renewed rise prompts further assessment with imaging. Your doctor reads the series of results rather than any single value.
Different assay methods produce AFP values that are not directly comparable, so a change between two laboratories may reflect the method rather than your health. If you are being monitored, give samples at consistent intervals and, where practical, through the same laboratory. Bring your previous AFP results so the direction of travel can be seen.
Liver function tests such as ALT, AST and bilirubin show liver inflammation and how well the liver is working. AFP is a fetal protein that rises with hepatitis activity, liver regeneration and certain tumours. Doctors read them together, because active hepatitis can raise AFP and the liver tests help explain a raised value that is not due to cancer.
No, and it is not offered for that purpose. In people at ordinary risk it generates far more false alarms than useful findings, because pregnancy and benign liver conditions raise it while many liver cancers do not. Its value lies in defined groups: those under surveillance for cirrhosis or chronic hepatitis, and those already diagnosed with a tumour that produces it.
Very often it reflects the liver itself rather than a tumour. Hepatitis activity, cirrhosis and tissue regeneration all raise AFP, and in pregnancy a rise is normal. Your doctor will usually repeat the test after an interval and watch the direction of change, since a stable or falling trend is reassuring in a way one reading cannot be.
Not on its own. A significant share of these tumours produce little or no AFP, so a normal result cannot rule one out. That is exactly why surveillance in at-risk people combines the blood test with ultrasound imaging instead of relying on either alone.
Different germ-cell tumour types produce different markers. The combination helps establish which type is present, which guides treatment, and both are then followed during chemotherapy to judge response. Neither on its own gives the full picture.
No. AFP needs no fasting, and you can eat and drink normally and take your usual medicines unless your doctor tells you otherwise. Tell the team if you are or might be pregnant, since AFP rises normally in pregnancy.
The AFP test is AED 70, including a physician-reviewed report, with results usually within 24 hours. Home collection anywhere in Dubai is free when your order reaches AED 300 or includes a package; below that, a AED 100 home collection fee applies (AED 50 for a lab walk-in).