Cancer Antigen 72-4 (CA 72-4)

The Cancer Antigen 72-4 (CA 72-4) Test from Lab Tests Dubai is a specialized blood-based tumor marker assay used to support the diagnosis, monitoring, and follow-up of certain cancers—particularly gastric (stomach), colorectal, pancreatic, and ovarian cancers.

CA 72-4 is a high-molecular-weight glycoprotein expressed on the surface of malignant epithelial cells, making it a valuable biomarker when used in conjunction with imaging, biopsies, and clinical findings.

Using high-sensitivity chemiluminescence immunoassay (CLIA) technology, this serum-based test delivers accurate results within 7 days, helping oncologists:

• Monitor treatment response in gastric or ovarian cancer
• Detect early signs of recurrence after surgery or chemotherapy
• Assess disease progression in advanced cases

Available with home blood collection, Lab Tests Dubai ensures accurate, timely, and stress-free cancer monitoring—so you can stay one step ahead in your fight against cancer.

Why You Need This Test

If you’ve been diagnosed with gastric, colorectal, or ovarian cancer, this test could be critical in tracking your treatment success.

You need the CA 72-4 Test if:

• You’re being evaluated for gastric adenocarcinoma (especially if upper endoscopy is inconclusive)
• You’re undergoing treatment for ovarian cancer and need tumor marker tracking
• You’re in remission and require surveillance for recurrence
• You have persistent abdominal symptoms and a family history of GI cancers
• Your doctor is monitoring treatment response (chemotherapy, surgery, immunotherapy)

While not a screening tool for the general population, CA 72-4 is more specific than CEA or CA 19-9 for gastric cancer, with rising levels often correlating with tumor burden.

This test is not diagnostic alone—but a powerful ally in cancer management.

Symptoms That Indicate This Test

Consider the CA 72-4 Test if you or a loved one are experiencing:

• For Gastric Cancer:

• Persistent upper abdominal pain or discomfort

• Early satiety or loss of appetite

• Unexplained weight loss

• Nausea, vomiting, or blood in vomit/stool

• Chronic indigestion or bloating

• For Ovarian Cancer:

• Abdominal bloating or swelling

• Pelvic pain or pressure

• Frequent urination or constipation

• Feeling full quickly

• For Colorectal/Pancreatic Cancer:

• Changes in bowel habits

• Blood in stool

• Fatigue (from anemia)

• For Cancer Survivors:

• Routine post-treatment monitoring

• Suspicion of recurrence or metastasis

These symptoms may indicate malignancy—and this test helps track disease activity.

Natural Production: How CA 72-4 Reflects Cancer Activity

CA 72-4 is a tumor-associated glycoprotein (TAG-72) produced by:

• Gastric adenocarcinoma cells
• Ovarian cancer cells (especially mucinous and serous types)
• Colorectal, pancreatic, and lung cancer cells (less commonly)

In healthy individuals, CA 72-4 levels are very low or undetectable.

Elevated levels occur when:

• Malignant cells overexpress the antigen
• Tumor burden increases
• Cancer recurs or metastasizes

Interpretation

• Rising levels over time → Suggests progression or recurrence
• Falling levels → Indicates positive response to treatment

CA 72-4 is often paired with CEA, CA 19-9, or CA-125 for comprehensive monitoring.

What Happens If Untreated or Unmonitored? Risks of Ignoring CA 72-4 Elevation

Ignoring rising CA 72-4 levels can lead to:

• Delayed Cancer Diagnosis – especially in early gastric cancer (often asymptomatic)
• Missed Recurrence – tumor grows undetected
• Advanced Disease – reducing treatment options (surgery, chemo)
• Metastasis – spread to liver, peritoneum, or lymph nodes
• Reduced Survival Rates – especially in gastric and ovarian cancers

The good news? With regular monitoring, recurrence can be caught early, allowing for:

• Timely chemotherapy
• Surgical intervention
• Improved survival outcomes

This test is a lifeline for cancer survivors.

How to Prepare for the Test

To ensure accurate results:

• No fasting required
• Continue your regular medications—but inform your oncologist
• Avoid testing during acute infection or inflammation (can cause false elevation)
• Inform your doctor if you have benign gastric or liver conditions

A serum blood sample is collected via standard draw—available at our labs or via home collection.

Test Overview: High-Sensitivity Chemiluminescence Method

Note: CA 72-4 is not a standalone diagnostic test—always interpret with:

• Imaging (CT, PET-CT)
• Endoscopy or biopsy
• Other tumor markers (CEA, CA-125)

Results are reported with reference range and clinical notes.