What is a PSA ?
PSA (prostate-specific antigen) - a substance that produces the prostate gland.Increased PSA levels can signal cancer or non-cancerous diseases such as prostatitis, it may also indicate an increase in cancer.
Dynamics antigen level is no less important than the actual PSA level.What is a PSA test?First, we must recognize that it is not perfect.For many men, an enlarged prostate gland is a non-cancerous normal attribute of aging, despite the fact that PSA levels have increased.On the other hand it is low level of antigen in the blood can indicate that the prostate cancer struck.
What is the PSA blood test
Blood sampling for the survey is carried out, usually from hands.The results of the study can be found within a few days.Donating blood for PSA, as well as to carry out a rectal digital examination is recommended annually for men over 50 years old.If you suspect that a cancer of the prostate biopsy the doctor prescribes.
Establishing high level of PSA may signal the development of cancer, but it can be a non-cancer diseases.The fact that the antigen level is caused by various factors.For example, it may be age - with PSA levels over the years, usually increases slowly even at a healthy prostate.Affect the level of antigen and medicines.If the examinee takes dutasteride or finasteride, a doctor must know about it.These drugs can lower the PSA level by half compared with the quantity before receiving the drug.When elevated levels of PSA as an additional study is assigned a biopsy of the prostate gland, and the results of which is determined by the presence or absence of cancer.
What is blood on PSA
Although the main purpose of the PSA analysis - detection of any denial of prostate cancer, research results are useful in other situations.What is a PSA wider application?In addition to determining the presence and stage of the tumor, using the PSA analysis, the progression of cancer, it helps to determine the methods of treatment.Monitoring PSA levels after radiation therapy helps to confirm or refute the effectiveness of treatment.Typically, the PSA level decreased to very low values, if in the course of treatment were completely destroyed or cancer cells are removed.On the contrary, the growth of PSA suggests that cancer cells are present in the prostate, and the disease came back.If the treatment approach is chosen "watchful waiting", by controlling PSA determine the presence of disease progression and, accordingly - adjust the treatment activity.When conducting hormone replacement therapy the PSA level control to evaluate the efficacy of treatment and if necessary to apply other methods.