Please mention other symptoms and history as well but for now
72-4 is a glycoprotein tumor marker,
Most often studied in gastric cancer (and also ovarian mucinous tumors, colorectal cancer, pancreatic cancer).
Not recommended for screening (per ESMO and NCCN guidelines) because of low specificity and sensitivity. It is mainly used for monitoring treatment response or detecting recurrence.
Mild elevation (like 16 U/mL) is nonspecific and can be seen in:
Benign conditions: gastritis,
liver disease, ovarian cysts, inflammation, smoking.
Early or residual malignancy (rarely as the only finding).
Next Steps
kindly be reassured but I do advise you to kindly connect if there are any symptoms or other abnormal lab reports