Prostate-Specific Antigen (PSA) Blood Test (Screening/Confirming)
This blood test measures levels of prostate-specific antigen, a protein produced by both normal and cancerous prostate cells. It helps assess prostate health and detect early signs of prostate cancer or other conditions.
["PSA tests are used to monitor prostate health and guide decisions about further evaluation."]
Key facts at a glance
- LOINC
- 69228-5
- Short code
- Deprecated RF Prostate Bx needle guide
- Synonyms
- Deprecated RF Prostate Bx needle guide
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- rf
- CPT
- 86430
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Doctors may order a PSA test to: check for signs of prostate cancer in men with no symptoms, monitor the progression or treatment response of prostate cancer, or evaluate symptoms like urinary issues that could indicate prostate problems. It is not a definitive cancer test but is part of a broader evaluation.
What to Expect Before the Test
No special preparation is needed. You may be asked to avoid ejaculation for 2–4 days before the test if you’ve had recent prostate exams. Bring any medications you’re currently taking, as some may affect results.
What Happens During the Test
A healthcare provider will draw blood from a vein in your arm. The process takes about 5 minutes and may cause a slight pinch. The sample is sent to a lab for analysis.
What the Results Mean
PSA levels vary by age, overall health, and other factors. A higher-than-normal level may signal prostate cancer or other conditions, but it does not confirm a diagnosis alone. Your doctor will interpret results in the context of your medical history and symptoms.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Elevated PSA levels can indicate prostate cancer, benign prostatic hyperplasia (BPH), prostatitis, or other prostate-related issues. While PSA screening has reduced prostate cancer deaths, it also leads to unnecessary biopsies and overdiagnosis. Discuss risks and benefits with your doctor before screening.
Short name
PSA Test
Frequently asked questions
What does a PSA test measure?
How often should I get a PSA test?
Can PSA levels change with diet or exercise?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy