AFP Test

If your doctor has recommended an AFP test, you likely have questions about what it screens for and what the results might mean. The AFP (alpha-fetoprotein) test measures a protein produced by a developing fetus or, in adults, by certain tumors. It serves two distinct purposes: screening for birth defects during pregnancy and monitoring for liver cancer in adults. This guide explains the test’s role, how to prepare, what results indicate, and what to do if they are abnormal—always emphasizing that AFP is a screening tool, not a definitive diagnosis.

What Does the AFP Test Measure?

Alpha-fetoprotein (AFP) is a protein normally produced by the yolk sac and liver of a fetus. During pregnancy, AFP levels in the mother’s blood rise and fall predictably. In adults, AFP is usually present at very low levels. When liver cells become cancerous (hepatocellular carcinoma) or are damaged by conditions like hepatitis or cirrhosis, AFP production can increase significantly. The test measures the concentration of AFP in a blood sample, providing a numerical value that doctors interpret based on the clinical context.

Why Is the AFP Test Done?

The AFP test is used in two main scenarios:

• Pregnancy screening (maternal serum AFP test): Typically performed between 15–20 weeks of pregnancy, this test screens for neural tube defects (e.g., spina bifida, anencephaly), abdominal wall defects (e.g., omphalocele), and Down syndrome. It is often part of a “triple screen” or “quad screen” that includes other markers. An abnormal result does not mean the baby has a problem—it only indicates a higher risk that requires further investigation.
• Adult monitoring: In people with chronic liver disease (hepatitis B or C, cirrhosis) or a history of liver cancer, AFP levels are monitored to detect hepatocellular carcinoma early or to track response to treatment. Elevated AFP in adults can also occur with testicular or ovarian germ cell tumors.

In both contexts, AFP is a screening test—it raises a flag but cannot diagnose a condition on its own.

How Should I Prepare for the AFP Test?

No special preparation is needed for an AFP test. It is a simple blood draw from a vein in your arm. You do not need to fast or stop any medications unless your doctor specifically advises otherwise. For pregnant women, the timing of the test is critical: it is most accurate between 15 and 20 weeks of pregnancy. If done too early or too late, the results may be less reliable.

Understanding AFP Test Results: Normal vs. Abnormal

AFP results are reported in nanograms per milliliter (ng/mL). Normal ranges vary by laboratory, pregnancy stage, and the patient’s age and health. Below are typical ranges for pregnancy and adults.

AFP Levels in Pregnancy: Typical Ranges by Trimester

Trimester	Normal AFP Range (ng/mL)	Abnormal Levels & Possible Associations
First trimester (weeks 1–12)	0–30	Low levels may be associated with Down syndrome; high levels are less common.
Second trimester (weeks 13–27)	10–150 (peak around weeks 28–32)	High levels: neural tube defects, abdominal wall defects, multiple pregnancies. Low levels: Down syndrome, Edwards syndrome.
Third trimester (weeks 28–40)	100–250 (declines toward term)	Abnormal levels may prompt further fetal assessment.

In adults (non-pregnant): Normal AFP is typically below 10 ng/mL. Levels above 10–20 ng/mL are considered elevated and require investigation. Mild elevations (10–100 ng/mL) can occur with hepatitis, cirrhosis, or liver regeneration. Levels above 400 ng/mL are strongly associated with hepatocellular carcinoma, though lower levels do not rule it out. Remember: these are general guidelines—your doctor will interpret your result in the context of your overall health and other tests.

What Happens After an Abnormal AFP Result?

An abnormal AFP result is not a diagnosis—it is a signal to investigate further. The next steps depend on the context:

• In pregnancy: Your obstetrician will likely recommend a repeat AFP test, a detailed ultrasound to examine the baby’s anatomy, and possibly amniocentesis (sampling of amniotic fluid) to check for chromosomal abnormalities. Many women with abnormal AFP go on to have healthy babies after further testing shows no problem.
• In adults: Elevated AFP typically leads to liver imaging (ultrasound, CT scan, or MRI) to look for tumors or signs of liver disease. If a suspicious lesion is found, a biopsy may be needed. Your doctor may also order blood tests for hepatitis B and C, and refer you to a hepatologist (liver specialist) or oncologist.

Do not panic if your AFP is abnormal. False positives and false negatives are possible, and many conditions that cause elevated AFP are treatable when caught early.

AFP Test Cost in Bangladesh

The cost of an AFP test in Bangladesh varies by laboratory, city, and whether it is done alone or as part of a panel. Below are approximate ranges for private labs and hospitals. Prices change frequently, so always confirm with the lab before booking.

AFP Test Cost in Bangladesh (Private Labs & Hospitals)

Item	Approx. BDT Range	Notes
AFP (alpha-fetoprotein) test alone	৳800 – 2,000	Standalone test; results in 1–3 days.
AFP as part of a liver panel (e.g., with ALT, AST, bilirubin)	৳1,500 – 3,000	Common for monitoring liver disease.
Triple screen (AFP, hCG, estriol) for pregnancy	৳2,000 – 3,500	Includes AFP; used for Down syndrome and neural tube defect screening.

Note: Costs are higher in Dhaka and major city hospitals compared to local diagnostic centers. Some labs offer discounts for package tests. Always request a price quote before the test.

When to Consult a Doctor

You should see a doctor about AFP testing in these situations:

• During pregnancy: If your AFP result is abnormal, consult your obstetrician promptly for follow-up tests. Do not assume the worst—most abnormal results are resolved with further evaluation.
• For adult liver health: If you have chronic hepatitis B or C, cirrhosis, or a family history of liver cancer, talk to a hepatologist or gastroenterologist about regular AFP monitoring. Red flags that warrant immediate attention include jaundice (yellowing of skin/eyes), abdominal pain or swelling, unexplained weight loss, and easy bruising or bleeding.
• After any abnormal result: Always discuss the result with the doctor who ordered the test. They will explain what it means in your specific situation and recommend the next steps.

Find General Surgeon Doctors by Division in Bangladesh

If your AFP test leads to a diagnosis requiring surgical evaluation (e.g., liver tumor or fetal abnormality), you may need to consult a general surgeon. Below are links to find qualified general surgeons across Bangladesh.

Division	Find a doctor
Dhaka / ঢাকা	General Surgeon Doctors in Dhaka
Chattogram / চট্টগ্রাম	Top General Surgeon Doctors in Chattogram
Khulna / খুলনা	Popular General Surgeon Doctors in Khulna
Rajshahi / রাজশাহী	General Surgeon Specialists in Rajshahi
Rangpur / রংপুর	General Surgeons in Rangpur
Sylhet / সিলেট	Best General Surgeon Doctors in Sylhet
Barishal / বরিশাল	Barishal General Surgeon Doctors
Mymensingh / ময়মনসিংহ	Popular General Surgeon Doctors in Mymensingh

Frequently Asked Questions

Can I eat or drink before an AFP test?

For the AFP test used in pregnancy screening, no special dietary preparation is needed. If the test is being done to monitor liver cancer, your doctor may ask you to fast for 8–12 hours because the blood sample may also be used for other tests that require fasting. Always follow the specific instructions your doctor gives you.

Is a high AFP result always a sign of cancer or a birth defect?

No. An elevated AFP level does not automatically mean cancer or a birth defect. In pregnancy, high AFP can occur with multiple gestations (twins or more), incorrect dating, or fetal liver problems. In adults, a temporarily high AFP may be seen with liver inflammation (hepatitis) or cirrhosis, not necessarily cancer. AFP is a screening tool; abnormal results require further evaluation, such as ultrasound or imaging, before any diagnosis can be made.

How accurate is the AFP test for detecting liver cancer?

The AFP test is a useful screening marker for hepatocellular carcinoma (the most common type of liver cancer), but it is not definitive on its own. Elevated levels (typically >400 ng/mL) increase suspicion, but some patients with liver cancer have normal AFP, and some with high AFP have benign conditions. Accuracy improves when combined with ultrasound (sonography) and clinical history. No single test can replace a comprehensive evaluation by a specialist.

Is the AFP test mandatory during pregnancy in Bangladesh?

No, the AFP test is not mandatory in routine antenatal care in Bangladesh. It is offered as an optional screening test, often as part of the triple or quad screen, usually between 15–20 weeks of pregnancy. You and your doctor can decide together based on your age, family history, and risk factors. Even if you choose not to have the test, standard ultrasound scans will still check for many structural abnormalities.

What should I do if my AFP result is low?

A low AFP level (especially below the normal range adjusted for gestational age) can be associated with an increased risk of certain chromosomal conditions, such as Edward syndrome (trisomy 18). However, a low result does not confirm any problem. Your doctor will likely recommend follow-up tests, such as a detailed ultrasound or invasive diagnostic testing like amniocentesis, if further evaluation is needed. Keep in mind that many low AFP results occur in perfectly healthy pregnancies.

Sources

The following sources are from international journals, government health agencies, or recognized medical organizations:

• World Health Organization — AFP Test (who.int)
• MedlinePlus — AFP Test (medlineplus.gov)
• CDC — AFP Test (cdc.gov)
• NHS — AFP Test (nhs.uk)
• PubMed — AFP Test (pubmed.ncbi.nlm.nih.gov)
• Mayo Clinic — AFP Test (mayoclinic.org)