CA72-4 (CA724) Test — Gastric Cancer Tumor Marker

Introduction

CA72-4 (also written as CA724) is a carbohydrate antigen used as a supportive tumor marker for gastric cancer and some gastrointestinal malignancies. It assists in risk assessment, treatment monitoring, and recurrence follow-up. Note that an elevated value alone does not equal a diagnosis; results must be interpreted with imaging and clinical findings.

Why Take a CA72-4 Test?

• Supportive evaluation: Helps assess risk when gastric or GI cancers are suspected.
• Treatment monitoring: Track levels before/after therapy to gauge response.
• Recurrence surveillance: Long-term follow-up in line with clinical plans.

Method & Workflow

A venous blood sample is collected to measure serum CA72-4. Results are typically available within 2–3 working days (lab-dependent).

Interpretation should be combined with clinical presentation, endoscopy/imaging, and other markers (e.g., CEA, CA19-9).

Factors & Notes

• Mild elevations may be seen in benign conditions (e.g., inflammation).
• Reference ranges vary by laboratory and method; follow your report’s range.
• Clinical decisions are based on trends over time and combined assessments.

Who Should Consider Testing?

• Patients with suspected GI malignancy as advised by physicians
• Confirmed gastric cancer patients requiring response/recurrence monitoring
• Individuals included in a tumor marker panel per clinical judgment

Frequently Asked Questions (FAQ)