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Prostate-specific antigen 1.5-4.0 ng/mL: a diagnostic challenge and danger zone. Crawford ED(1), Moul JW, Rove KO, Pettaway CA, Lamerato LE, Hughes A. Author information: (1)University of Colorado, Anschutz Medical Campus, Aurora, 80045, USA. david.crawford@ucdenver.edu What's known on the subject? and What does the study add?


Prostate-specific antigen (PSA), also known as gamma-seminoprotein or kallikrein-3 (KLK3), is a glycoprotein enzyme encoded in humans by the KLK3 gene. PSA is a member of the kallikrein-related peptidase family and is secreted by the epithelial cells of the prostate gland.


The prostate specific antigen (PSA) test is used to measure blood PSA levels and help detect prostate cancer or other prostate abnormalities. Learn more about the PSA blood test at WebMD.


Prostate cancer is the most common cancer in men after skin cancer. Risk factors include age, family history, ethnicity, and diet. Prostate cancer is diagnosed by digital rectal exam, prostate specific antigen (PSA) test, and prostate biopsy. Symptoms may include frequent need to urinate, incontinence, pain, blood in the urine, fatigue, and more.


Prostate-specific antigen, or PSA, is a protein produced by normal, as well as malignant, cells of the prostate gland. The PSA test measures the level of PSA in a man’s blood. For this test, a blood sample is sent to a laboratory for analysis.


in the past, most experts viewed prostate-specific antigen (psa) levels less than 4 ng/ml as normal. because of the findings from more recent studies, some recommend lowering the cutoff levels that de


Prostate Specific Antigen or PSA, is an enzyme found in a man's blood produced exclusively by prostate cells.Normal PSA levels in the blood are very small amounts between 0-2.5 ng/ml. As men age, normal levels can increase slightly.


The mean weight of the normal prostate in adult males is about 11 grams, usually ranging between 7 and 16 grams. It surrounds the urethra just below the urinary bladder and can be felt during a rectal exam. Prostate-specific antigen (PSA) is a protein made by the cells of the prostate gland.


Synopsis. There is a general consensus among clinicians that a serum prostate-specific antigen (PSA) level ≥4.0 ng/ml is predictive of prostate cancer, and necessitates a biopsy.


The PSA test is a blood test used primarily to screen for prostate cancer.. The test measures the amount of prostate-specific antigen (PSA) in your blood. PSA is a protein produced by both cancerous and noncancerous tissue in the prostate, a small gland that sits below the bladder in men.