In recent years, rapid, at-home blood tests have been marketed as a quick way to check prostate health. This has led some men to try to find out how to check for prostate cancer at home.
How reliable are the tests, and should you use them?
What Is PSA and Why Do Tests Look for It?
PSA stands for prostate-specific antigen, a protein made by the prostate gland. It normally circulates at low levels in the blood, but levels can rise if something irritates or enlarges the gland.
Elevated PSA can sometimes signal prostate cancer, but it can also occur because of:
- Benign prostatic hyperplasia (BPH)
- Prostatitis from inflammation or an infection
- Exercise, such as cycling
- Sexual activity
How to Check for Prostate Cancer at Home with a PSA Blood Test
There are two main types of tests sold directly to consumers:
- Mail-in blood tests, where you prick your finger, collect a sample, and mail it to a private lab. After processing, the results are sent back electronically.
- Rapid strip tests, which give a result within minutes, show a positive line if PSA is above a set level.
While convenient, these tests are not designed to diagnose cancer.
Why Are At-Home PSA Tests Unreliable?
The idea of testing yourself for prostate cancer at home is appealing, but there are important limitations to keep in mind. Unlike visiting a doctor, there is a lack of medical guidance. Home tests don’t include expert interpretation or follow-up care.
At-home PSA tests can give false positives, meaning a high PSA level doesn’t always indicate cancer. Levels can be raised by other conditions, and false positives often lead to unnecessary worry.
On the other hand, false negatives can also occur. Some men with prostate cancer may still have normal PSA levels, giving them a false sense of reassurance.
Finally, the reliability of the kits sold online can be questionable.
Symptoms May Point to BPH, Not Cancer
Many urinary symptoms that prompt men to check their prostates are actually caused by benign prostatic hyperplasia (BPH). This is a very common, non-cancerous condition. Symptoms include:
- Difficulty starting urination
- Weak or interrupted stream
- Frequent urination, especially at night
- Feeling like the bladder isn’t fully empty
- Dribbling after urination
These symptoms can overlap with prostate cancer. That’s why self-testing without medical input can be misleading.
When you see a urologist, they take a more complete approach than any home test can provide. This typically begins with a review of your medical history and symptoms to assess your risks and gain a deeper understanding of how your symptoms are impacting you.
A physical prostate exam, often including a digital rectal exam, helps check for changes in the prostate.
A formal PSA blood test is then done in a regulated lab, which is more reliable than home kits. If needed, further tests such as an ultrasound, MRI scans, or prostate biopsy may be ordered to confirm a diagnosis.
Just as important, your doctor interprets these results in context.
Sometimes, a mildly raised PSA only requires repeat testing. Higher or persistent levels may lead to more detailed investigations.
Schedule Your Prostate Cancer Screening
At-home prostate cancer tests may look simple, but they are not a reliable way to check for cancer. A urologist can arrange the right tests, explain what the results mean, and guide you toward peace of mind or timely treatment if needed.
If you are 50 or older or have urinary symptoms, don’t delay. Call 843.347.2450 to schedule your prostate cancer screening today! We see patients in Myrtle Beach, Murrells Inlet, and Conway.