PSA
Measures prostate-specific antigen (PSA), a protein the prostate releases into blood. Used in prostate screening and monitoring as part of a plan you agree on with your doctor.
PSA is a protein made by prostate cells; a blood test measures how much is leaking into circulation. Doctors use it to screen some men for prostate cancer, watch levels after treatment, and track inflammation or prostate enlargement that can also raise the number. MedlinePlus stresses there is no one-size answer for screening: benefits, harms, age, family history, and ethnicity all belong in the conversation before you test. A PSA result is a signal for shared decisions, not a stand-alone verdict.
Self-Pay Price Comparison
| Provider | Price | vs. Highest | Order |
|---|---|---|---|
Quest QuestHealth self-pay | $69.00 | Highest | Order · Quest |
LabCorp Labcorp OnDemand | $69.00 | Highest | Order · LabCorp |
GoodLabs Discount lab network | $5.00Best value | Best price | Order · GoodLabs |
What This Test Measures
Total PSA is one concentration in nanograms per milliliter from a blood draw. Here is what that single prostate signal represents:
Protein made by prostate tissue that leaks into blood; high values can mean benign growth, infection, recent procedures, or higher cancer risk, very low values are often reassuring but still belong in an age-and-trend conversation with your doctor.
How to Read Your Results
PSA is read against age, ethnicity, medicines, and prior trends. Here is how to think about the three rows people argue about most:
| Marker | Normal Range | If Flagged | What It Might Mean |
|---|---|---|---|
| PSA (general reference context) | MedlinePlus Medical Encyclopedia (PSA blood test): a normal PSA level is often described as up to 4.0 ng/mL, but this varies by age; for men in their 50s or younger, PSA is often below 2.5 ng/mL in most cases; older men may run slightly higher. | abnormal | MedlinePlus states your doctor weighs age, ethnicity, medicines, and past PSAs together. One result in isolation rarely tells the full story; repeat testing and trend often matter more than a single point. |
| PSA (high without cancer) | MedlinePlus lists non-cancer causes such as a large prostate, prostate infection, urinary tract infection, recent prostate biopsy or cystoscopy, catheter use, recent ejaculation, or recent colonoscopy. | high | A bump can be noise from those triggers or a real shift in prostate tissue. Your doctor may repeat the test after treatment for infection, adjust timing after procedures, or add other tests if concern remains. |
| PSA (screening limits) | MedlinePlus notes the PSA test alone cannot confirm prostate cancer; only a prostate biopsy can confirm that cancer. | abnormal | That wording is MedlinePlus's own caution. Elevated PSA prompts more discussion and sometimes more testing; it does not lock in a label from one blood draw. |
When to Order
Annual baseline
Routine PSA screening is a personal choice; MedlinePlus suggests men 55-69 weigh pros and cons with a doctor, while many guidelines discourage screening past 70.
Family history of prostate cancer, especially a father or brother
Higher inherited risk is a common reason younger men discuss earlier or more frequent PSA testing.
African American ancestry with shared decision-making about screening
MedlinePlus notes higher baseline risk for some men; timing and frequency should be individualized with a doctor.
Urinary symptoms or an abnormal prostate exam
PSA can rise with benign enlargement, infection, or cancer; your doctor reads it next to symptoms and exam before deciding on imaging or biopsy.
After prostate cancer treatment
Serial PSA is standard surveillance to see whether treatment is holding or whether the cancer signals are creeping back.
Prep & Logistics
- Fasting
- Typically no fasting
- Sample
- Blood draw
- Results
- Usually 24-48 hours; many portals update the same day or the next.
- Referral
- Often self-order (check local rules)
- Markers
- Total PSA in ng/mL (nanograms per milliliter). MedlinePlus notes avoiding testing right after a urinary tract infection, some prostate procedures, or heavy exercise that can transiently change the number; ask your doctor about timing.
Tests That Pair With This One
FAQ
At what age should I even consider PSA screening?
Guidelines emphasize shared decision-making for men roughly 55–69; higher-risk men may start earlier. PSA is not a yes/no cancer test—age, symptoms, family history, and the harms of follow-up procedures all belong in the conversation.
My PSA is 5. Do I have cancer?
Not automatically. MedlinePlus lists benign prostate growth, infection, recent sex or procedures, and other causes that can lift PSA. Your doctor may repeat the test, check a urine sample, or discuss imaging or biopsy only if the story warrants it.
Should every man start PSA tests at 40?
Not necessarily. Guidelines disagree; MedlinePlus highlights shared decision-making for men 55-69 and extra consideration for higher-risk men under 55. Your doctor tailors timing to you, not a meme on the internet.
Can medicines change PSA?
Yes. MedlinePlus notes some drugs can falsely lower PSA, so your doctor needs your full medication list before interpreting the number.
Sources
Prices pulled directly from provider websites and verified by hand. Reference ranges sourced from MedlinePlus. Not generated by AI.
- GoodLabs - product page (pricing context)(verified 2026-03-23)
- Quest - consumer lab shop (pricing context)(verified 2026-03-23)
- LabCorp OnDemand - PSA prostate cancer screening test (pricing context)(verified 2026-03-23)
- MedlinePlus - Prostate-Specific Antigen (PSA) Test overview
- MedlinePlus Medical Encyclopedia - Prostate-specific antigen (PSA) blood test (reference ranges, screening context)
- Clinical context: LabRecon editorial team. Not medical advice. For informational use only.
Total PSA immunoassay. Primary prostate cancer screening marker; also used for post-treatment monitoring and risk stratification.
Ordering note
Free PSA ratio can improve specificity. Some provider listings bundle PSA and Free PSA; note both when scraping.