A prostate-specific antigen (PSA) test is a blood test that measures the level of PSA in a sample of your blood. PSA is a protein made by your prostate. The prostate is a gland in the male reproductive system. It lies just below the bladder. It makes the fluid part of semen.
A PSA test is used to screen for prostate cancer. Cancer screening means looking for signs of cancer before it causes symptoms. But screening tests can't diagnose cancer. If a screening test finds signs of cancer, you'll need other tests to find out if you have cancer and how serious it may be.
Source: MedlinePlus, U.S. National Library of Medicine
Normal range
No published reference range from a named lab yet.
What an abnormal result can be associated with
Associations from LOINC2HPO (Human Phenotype Ontology). This is reference information, not a diagnosis — only a clinician can interpret your result in context.
Details
- Sample
- Serum or plasma · LOINC
- Listed under
- Prostate Cancer
- Code
- LOINC 2857-1 · ng/mL
- Also known as
- Prostate specific Ag, URO, Tumor marker, PS, Kallikrein 3