PSA (Prostate-Specific Antigen)
A blood test that measures PSA levels to screen for prostate cancer and monitor prostate health in men.
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What this test measures
Prostate-specific antigen (PSA) is a protein that the prostate gland produces. PSA is a glycoprotein produced by the prostate gland, the lining of the urethra, and the bulbourethral gland. Normally, very little PSA is secreted in the blood. Normal and cancerous prostate tissue make PSA, but prostate cancer tends to produce PSA in higher amounts. The PSA test measures the amount of this protein circulating in the bloodstream.
Increases in glandular size and tissue damage caused by benign prostatic hypertrophy, prostatitis, or prostate cancer may increase circulating PSA levels. This test serves multiple purposes: screening for prostate cancer in healthy men, monitoring disease progression in those already diagnosed with prostate cancer, and evaluating treatment effectiveness. Healthcare providers measure PSA in blood in nanograms per milliliter of blood (ng/ml). While elevated PSA levels can indicate prostate cancer, they may also result from non-cancerous conditions affecting the prostate, making this test an important but not definitive screening tool that requires professional medical interpretation.
Who should consider this test
You might consider this test if you are experiencing any of the following:
- Men aged 50 and older seeking routine prostate cancer screening as part of preventive healthcare
- Men aged 45 and older with increased risk factors, such as African American heritage or family history of prostate cancer
- Individuals experiencing urinary symptoms such as difficulty urinating, frequent urination, or weak urine stream
- Men with a family history of prostate or breast cancer who want early detection monitoring
- Those who have had elevated PSA levels in the past and need follow-up testing
- Men considering prostate health evaluation without requiring a doctor's appointment for the initial test
What to expect
Preparation
No fasting is required for this test. Avoid ejaculation for 24-48 hours before testing, as it may temporarily elevate PSA levels. Inform the lab if you have had a digital rectal exam, prostate biopsy, or urinary catheter insertion within the past few weeks, as these procedures may affect results.
Sample Type
A simple blood draw from a vein in the arm, similar to routine blood work.
Collection
The blood sample collection takes just a few minutes. A healthcare professional will clean the area, insert a small needle to draw blood into a tube, and apply a bandage afterward.
Turnaround
Results are typically available within 1-2 business days and will be provided through a secure online portal.
Understanding your results
A normal PSA depends on age, as PSA levels slowly increase as men get older, even without prostate cancer or other conditions affecting the prostate. Healthcare providers and medical researchers haven't determined a single, normal PSA level. Previously, a level of 4.0 nanograms per milliliter (ng/ml) would lead to more testing, but now providers consider other factors along with PSA levels. Results must be interpreted in the context of individual factors including age, family history, and overall health.
When total PSA concentration is below 2.0 ng/mL, the probability of prostate cancer in asymptomatic men is low. When total PSA concentration is above 10.0 ng/mL, the probability of cancer is high and prostate biopsy is generally recommended. The total PSA range of 4.0 to 10.0 ng/mL has been described as a diagnostic "gray zone," in which additional testing helps determine the relative risk of prostate cancer.
| Population | Reference Range | Notes |
|---|---|---|
| Men under 50 years | 0-2.5 ng/mL | Generally considered normal for younger men |
| Men 50-59 years | 0-3.5 ng/mL | Age-adjusted reference range |
| Men 60-69 years | 0-4.5 ng/mL | Age-adjusted reference range |
| Men 70+ years | 0-6.5 ng/mL | Age-adjusted reference range for older men |
Reference ranges shown are general guidelines. Your lab report will include the specific reference range used by the laboratory that processed your sample, which is the authoritative range for interpreting your results.
What does a “Low” result mean?
Low PSA levels are generally considered normal and typically indicate healthy prostate function. Very low PSA levels (below 1.0 ng/mL) are common in younger men and those without prostate conditions. Consistently low PSA levels over time suggest a reduced likelihood of prostate cancer, though they do not completely rule out the possibility. Some medications, particularly those used to treat enlarged prostate (such as finasteride or dutasteride), can significantly lower PSA levels. If taking such medications, healthcare providers may adjust the interpretation of results accordingly. Extremely low PSA levels in men who have had prostate surgery or treatment may indicate successful treatment response.
What does a “High” result mean?
An elevated PSA level may be a sign of prostate cancer or another noncancerous condition. Mild to moderate increases in PSA: between 4 and 10: are considered borderline, while levels over 10 are considered high. The higher the PSA, the more likely the presence of prostate cancer. However, elevated levels can also result from benign conditions such as benign prostatic hyperplasia (enlarged prostate), prostatitis (prostate inflammation), urinary tract infections, or recent procedures involving the prostate. Since benign prostatic hyperplasia yields higher PSAs than the normal level of 4.0 ng/ml, older men will more likely have higher normal PSAs than younger men. Additional testing, including potentially a prostate biopsy, may be recommended to determine the cause of elevated PSA levels.
Privacy & confidentiality
All test orders are authorized and results reviewed by an independent, board-certified physician who is not the patient's personal doctor. LevelPanel prioritizes complete confidentiality for all PSA testing. Results are <u>not reported to your doctor</u> or healthcare provider unless you choose to share them. Your PSA test results are <u>not part of your medical records</u> and will <u>not appear on insurance statements</u> or explanation of benefits forms. The testing process is entirely private, with results accessible only through your secure online account. Employers, insurance companies, and government agencies cannot access your results. This confidential approach allows individuals to monitor their prostate health privately and make informed decisions about follow-up care. The privacy protection ensures that PSA screening can be conducted without concerns about potential impacts on insurance coverage or employment, providing peace of mind for those seeking prostate health information. No doctor visit is required to order this test, making prostate cancer screening more accessible and convenient.
Frequently asked questions
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CPT Code: 84153
This test may not be available in: NY, NJ, RI
This page is for informational purposes only and does not constitute medical advice. Always consult with a healthcare provider regarding any health concerns. LevelPanel does not diagnose, treat, or prescribe.
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