Harvard Men's Health Watch

PSA variability: A new factor

Decisions about prostate cancer treatment are often made based on the results of PSA testing, but the PSA reading can fluctuate due to exercise or even climate, so a high test reading may not necessarily mean a prostate cancer diagnosis.
To continue reading this article, you must login.
  • Research health conditions
  • Check your symptoms
  • Prepare for a doctor's visit or test
  • Find the best treatments and procedures for you
  • Explore options for better nutrition and exercise
Learn more about the many benefits and features of joining Harvard Health Online »