Cancer antigen 15-3 (CA15-3) is a protein produced by a variety of cells, particularly breast cancer cells. There is an increased production of CA 15-3 in persons with cancerous breast tumors however CA 15.3 test is not specific for breast cancer because levels are also increased in patients with gastric, colorectal, lung, pancreas, ovarian, uterine, and cervical cancers. CA 15.3 does not cause cancer.
24 to 36 Hours
CA 15-3 concentrations generally increase as the cancer spreads. The highest levels of CA 15.3 are observed when the cancer has spread to the bones and liver. CA- 15.3 test determines the cancer characteristics to monitor the response to treatment of invasive breast cancer and to watch for the recurrence of the disease.
Increasing concentrations of CA- 15.3 over time indicate that person is not responding to treatment or that the cancer is recurring.
Common symptoms are
Preparatory instructions before the test *:
No Fasting Required.
No other special preparations required.
Specimen type: Serum (Blood Sample)
Specimen collection procedure: Venipuncture (Collection of blood from a vein, usually from the arm)
|00 to 32.4 U/ml||Normal|
‘*A Reference range is a set of values which helps the healthcare professional to interpret a medical test. It may vary with age, gender, and other factors. Reference ranges may also vary between labs, in value & units depending on instruments used and method of establishment of reference ranges’
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