There has been controversy over PSA
screening for a number of years.
Despite decades of clinical research, no clear consensus has emerged on the benefits of PSA
Table 1 presents comparisons of the observed total PSA
concentration as a mean percentage (SD) of the expected (theoretical) concentration for 4 concentrations of the 90:10 PSA
Stanford/WHO reference standard and the prepared Scripps 90:10 PSA
Conclusion: Total-free PSA
levels decrease with the amount of tissue extracted during TURP in BPH patients.
The assays for complexed PSA
and free PSA
were each able to identify men with prostate cancer with greater specificity than was the test for total PSA
, said Carol D.
The avidity of PSA
to ACT and AMO following the addition of PSA
to blood plasma shows preferential complex formation between PSA
and AMG, resulting in a loss of PSA
The relatively large survival difference (10 months) seen in patients with a rapid rate of PSA
decline is particularly compelling given that patients who experienced a rise in PSA
84 days after starting docetaxel were excluded from PSAHL analysis.
In 1997, the Committee of Investigation on PSA
Assay (sponsored by the Japanese Urological Association and the Japanese Society of Laboratory Medicine) carried out a survey of the variability among assays.
Lowering the PSA
threshold for proceeding to prostate biopsy would increase the risks of overdiagnosing and overtreating clinically unimportant disease," he said.
The researchers analyzed frozen blood samples taken in the early 1980s--before PSA
testing was used for diagnosis--from 430 men who developed prostate cancer over the next decade.
Although the precise function of PSA
has never been discovered, it now appears that PSA
may form part of the body's defense against cancer.
GlyphWorks replaces PSA
Peugeot Citro[R]n's custom software and will be used by over one hundred users at four different PSA
Peugeot Citro[R]n sites for overall vehicle durability, fatigue and vibration analysis.