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Cancer Antigen 72-4 (CA72-4) for Esophageal Cancer

Published: July 27, 2026Updated: August 25, 2026

CA72-4 is a tumor marker used to monitor the progression and treatment response of esophageal cancer by measuring its levels in the blood.

Quick summary

CA72-4 is a blood marker for monitoring esophageal cancer.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

Key facts at a glance

Units
U/mL
Clinical utility
monitoring
Result kind
quantitative
FDA-cleared
Roche CA 72-4, Fujirebio CA 72-4
interpretation: {"text":"0–6.9 U/mL: CA72-4 levels within the normal range suggest no current evidence of active esophageal cancer.","label":"Normal"}; {"text":">6.9 U/mL: Levels above the normal range may indicate the presence of esophageal cancer or require further evaluation.","label":"Elevated"}

Cancer Antigen 72-4 (CA72-4) is a glycoprotein commonly found in gastrointestinal cancers, including esophageal cancer. Elevated levels of CA72-4 in the blood can indicate the presence or recurrence of esophageal cancer.

This biomarker is particularly useful in monitoring the effectiveness of treatment and detecting disease progression or recurrence. Regular monitoring of CA72-4 levels can help in the early identification of potential issues, allowing for timely adjustments in treatment plans.

The reference range for CA72-4 is typically between 0–6.9 U/mL. Levels above this range may warrant further investigation and could indicate the need for additional diagnostic tests or changes in treatment strategy.

Frequently asked questions

What is the purpose of testing for CA72-4?
The test is primarily used to monitor the progression of esophageal cancer and the effectiveness of treatment.
Can CA72-4 levels be elevated in other conditions?
Yes, CA72-4 levels can also be elevated in other gastrointestinal cancers and certain non-cancerous conditions, so further testing is often needed for a definitive diagnosis.
  1. 1
    National Cancer Institute - Tumor MarkersSource
  2. 2
    American Society of Clinical Oncology - CA 72-4Source

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy