CA 15-3
These tests look for tumor markers, which are sometimes called cancer markers. The normal range is 0–31 U/mL for adults, as ARUP Laboratories Test Directory publishes it.
Tumor markers are substances that are made by cancer cells or by normal cells in response to cancer. For example, some cancer cells make certain proteins in larger amounts than normal cells do. These proteins can act as tumor markers because their presence may mean cancerous cells are present.
Tumor marker tests are most often used after you have a cancer diagnosis.
Source: MedlinePlus, U.S. National Library of MedicineNormal range
1 published range, each from a named source 31 U/mL drawn: all ages · ARUP Laboratories Test Directory
- Normal
- 0–31 U/mL
- Sample
- Serum or plasma · LOINC
- Listed under
- Breast Cancer · Male Breast Cancer
- Code
- LOINC 6875-9 · U/mL
- Also called
- Cancer Ag 15-3
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