PSA test - Causes, Symptoms and Treatment .MF .
purpose of the PSA test
Normally the blood contains a small amount of prostate-specific antigen (PSA). PSA - is a specific protein that produces the prostate in adult men.By increasing, inflammation and other diseases of the prostate blood PSA level is rising.Increased he and prostate cancer.Determine the level of PSA can be a blood test.As with all analyzes possible false positive and false negative results.Sometimes patients with prostate cancer analysis is negative, and in men with elevated PSA terrible diagnosis is not confirmed.
Men older than 50 years should take place once a year, digital rectal examination and PSA test.People with a bad heredity is better to start with the 45 years surveyed.But on this point there is another opinion.Some experts are opposed to mandatory survey so that all the men.Discuss with your doctor the need for the survey is the case, if you're over 50 and your family history of prostate cancer.Since the appropriateness of the test is disputed, it is necessary beforeha
blood test for PSA can also be used to trace the development of the disease or to assess the effectiveness of the selected treatment.
Preparing the PSA test
Special preparation for the PSA test is not required.To avoid false results, it is better to pass the PSA test just prior to digital rectal examination or two days or more thereafter.
analysis for the study of PSA, blood is taken from a vein.When the needle is inserted, you may feel pain, but it quickly passes.A small portion of blood drawn into a tube and sent to the laboratory.
Fence blood PSA takes 3-5 minutes.
Bad PSA analysis: what to do?
If PSA content slightly above the norm, and when rectal examination is not found nothing suspicious, the doctor may prescribe a reanalysis.
PSA level above 4 ng / ml is 20-25% probability of prostate cancer.If the PSA level above 10 ng / ml, the probability of cancer is more than 50%.The higher the PSA level in the blood, the higher the threat of cancer.
However, the PSA test result by itself is not a basis for raising the "cancer" diagnosis.The level of PSA can be increased 2-3 times with benign hyperplasia (magnification) of the prostate.In addition, it may increase because of infections, inflammation of the prostate gland, and after a biopsy or prostate surgery.
If the PSA level is higher than normal, you need to go through a transrectal ultrasound of the prostate (TRUS).To confirm the diagnosis "cancer" also need a biopsy data.
risks during the test PSA
itself PSA test is almost no risk.But false positive result of this analysis makes the patient much worried and go through a number of other surveys tedious and false-negative result complicates cancer diagnosis.
Limits Test PSA standards
Most men over 40 years in the blood PSA level less than 4 ng / ml.In men younger than 40 years, it should be no more than 2.7 ng / mL.