PSA Test: What Men Need to Know About Prostate Health

Prostate cancer is the second most common cancer in American men — more than 300,000 new cases are diagnosed each year. When caught early, the 5-year survival rate is nearly 100%. When caught after it has spread to distant organs, that number drops to around 30%.

The PSA test is the primary blood-based screening tool for prostate cancer. It is simple, inexpensive, and can detect problems years before symptoms appear. Here is what every man should know.

PSA stands for Prostate-Specific Antigen — a protein produced by cells in the prostate gland. Small amounts of PSA normally enter the bloodstream. A PSA test measures the concentration of PSA in your blood.

PSA is not a cancer marker in the strict sense. It is a prostate marker. Elevated PSA can indicate prostate cancer, but it can also indicate benign prostatic hyperplasia (BPH), prostatitis (prostate inflammation), or other non-cancerous conditions. This is why PSA results always need to be interpreted in context.

PSA is measured in nanograms per milliliter (ng/mL). There is no universally agreed-upon "normal" cutoff, but general guidelines are:

However, these thresholds are not absolute:

• Some men with PSA below 4.0 have prostate cancer — particularly aggressive forms
• Many men with PSA between 4.0–10.0 do NOT have cancer — BPH and prostatitis are common causes of elevated PSA in this range
• PSA velocity matters — a rapid rise in PSA over time (even within the "normal" range) can be more concerning than a single elevated reading

Some physicians also consider:

• PSA density — PSA level divided by prostate volume (measured by ultrasound). Higher density suggests a greater likelihood of cancer.
• Free PSA percentage — PSA circulates in two forms: bound to proteins and free. A lower percentage of free PSA is associated with higher cancer risk. This is sometimes used to help decide whether a biopsy is warranted when PSA is in the gray zone.

An elevated PSA does not mean you have cancer. Common non-cancerous causes include:

• Benign prostatic hyperplasia (BPH) — an enlarged prostate is extremely common in men over 50 and can significantly raise PSA
• Prostatitis — inflammation or infection of the prostate can cause dramatic PSA spikes
• Recent ejaculation — PSA can be temporarily elevated for 24–48 hours after ejaculation; abstain for 48 hours before testing for the most accurate result
• Vigorous cycling or horseback riding — pressure on the prostate can temporarily raise PSA
• Recent prostate biopsy or cystoscopy — can elevate PSA for several weeks
• Digital rectal exam (DRE) — a prostate exam can temporarily raise PSA; ideally, PSA should be drawn before a DRE

Screening recommendations vary between medical organizations, but general guidance is:

Average risk men:

• Start discussing PSA screening with a physician at age 50
• Annual or biennial testing from 50–70

Higher risk men — start at age 40–45:

• African American men — prostate cancer is more common and more aggressive in Black men; earlier screening is strongly recommended
• Men with a first-degree relative (father or brother) diagnosed with prostate cancer before age 65
• Men with BRCA1 or BRCA2 gene mutations — associated with higher prostate cancer risk

Men over 70: The benefit of PSA screening decreases with age as the risk of overdiagnosis and overtreatment increases. Discuss with your physician whether continued screening is appropriate based on your health status and life expectancy.

PSA screening is one of the more debated topics in preventive medicine. Here is the honest picture:

Arguments for screening:

• Prostate cancer caught at stage I or II is nearly always curable
• PSA screening has contributed to a significant decline in prostate cancer mortality since the 1990s
• Early detection avoids the need for aggressive treatment

Arguments against universal screening:

• PSA cannot distinguish between slow-growing cancers that may never cause harm and aggressive cancers that need treatment
• Elevated PSA leads to biopsies, which carry risks (infection, bleeding, anxiety)
• Some prostate cancers detected by PSA screening would never have caused symptoms or death — leading to unnecessary treatment with significant side effects (incontinence, erectile dysfunction)

The current consensus is that PSA screening is a personal decision that should be made in consultation with a physician who can discuss your individual risk factors, values, and preferences. What is clear is that men who want to be screened should have access to the test.

An elevated PSA result is not a diagnosis — it is a signal that further evaluation may be warranted. Next steps typically include:

1. Repeat PSA test — to confirm the result and rule out transient causes
2. Digital rectal exam (DRE) — physical examination of the prostate
3. Free PSA ratio — to help assess cancer probability
4. MRI of the prostate — increasingly used before biopsy to identify suspicious areas
5. Prostate biopsy — the definitive test for prostate cancer; typically recommended when PSA is consistently elevated and other risk factors are present

In most states, you can order a PSA test directly without a physician's order. At Reliable Exams, a PSA (Prostate-Specific Antigen) test can be ordered online and drawn at any LabCorp or Quest Diagnostics location near you. No fasting required. Results in 1–2 business days.

If your results are elevated, we recommend following up with a urologist or your primary care physician to discuss next steps.

For a comprehensive annual men's health screening, our Male Wellness Panel covers the key metabolic, cardiovascular, and hormonal markers every man should track annually.