Cancer Antigen 724 (CA 72.4) – Fluid Concentration
This test measures the concentration of a specific protein, CA 72.4, which may be produced by certain types of cancer, particularly those of the gastrointestinal tract. It is a blood test that helps assess your health.
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Wichtigste Fakten im Überblick
- LOINC
- 34161-0
- Kurzcode
- CA72-4
- Synonyme
- Cancer Ag72-4 Fld-aCnc
- Kategorie
- Klinische Chemie
- Probe
- serum
- Probenbehälter
- Red-top serum tube or serum separator tube (SST)
- Einheiten
- N/A
- Referenz min.
- 0
- Referenz max.
- 6
- Kritischer Bereich
- 0.5 N/A – —
- Nüchtern
- Nein
- Population
- Erwachsene
- Geschlecht
- all
- Altersbereich
- 18–99 Jahre
- Methode
- Immunoassay (chemiluminescent or electrochemiluminescent)
- CPT
- 86316
- SNOMED
- 1152683000
- Probenvolumen
- 1-2 mL serum
- Probenstabilität
- Stable for 24 hours at room temperature, 7 days at 2-8°C, or 3 months at -20°C. Avoid repeated freeze-thaw cycles.
- Hämolyse max.
- 100
- Lipämie max.
- 200
- Ikterus max.
- 50
- Bearbeitungszeit
- 24–72 Stunden
- Anordnung
- routine
What is CA 72.4?
CA 72.4 is a tumor-associated antigen found in higher levels in some cancers, such as gastric (stomach) and pancreatic cancers. It’s often used alongside other tests to aid in diagnosis, staging, or treatment monitoring. However, it can also appear in non-cancerous conditions, so results should always be interpreted by a healthcare provider in the context of your medical history and symptoms.
Why might this test be ordered?
Your doctor may order a CA 72.4 test if you have symptoms suggestive of gastrointestinal cancer (e.g., unexplained weight loss, abdominal pain, or changes in bowel habits), if you’ve been diagnosed with a cancer that may produce this marker, or as part of routine monitoring during treatment. It can also be used to check for recurrence after treatment.
How is the test performed?
A blood sample is drawn from a vein in your arm. The blood is then sent to a lab for analysis. The test measures the amount of CA 72.4 protein in your serum or plasma. Results are typically reported as a concentration value, though reference ranges can vary by lab.
What do the results mean?
Elevated levels of CA 72.4 may indicate the presence of cancer, but they can also be found in other conditions, such as chronic liver disease or certain infections. A low or normal result doesn’t definitively rule out cancer. Your doctor will discuss the results with you and may recommend additional testing if needed.
Reference range
Less than 6.0 U/mL (varies by assay manufacturer); values above the upper limit may indicate malignancy and warrant further clinical evaluationN/A
No fasting required. No special preparation needed. Inform clinician of any recent biological therapies or monoclonal antibody treatments as these may affect results.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
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Kurzbezeichnung
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Häufige Fragen
What are the typical reference ranges for CA 72.4?
Can CA 72.4 levels change over time?
Is this test always accurate?
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Medizinisch geprüft von WellAlly-Redaktionsteam Zuletzt geprüft 17. August 2026. · Unsere redaktionelle Richtlinie lesen