Access®, Access 2 and UniCel® DxI 800 Access Immunoassay Systems
Pricing
Product Description
PSA exists in multiple forms in the blood. Most is bound to proteins, but some is free-floating. In the early 1990s, it was discovered that measuring the ratio of "free" to "total" PSA could further help in distinguishing prostate cancer from benign prostate disease.
The Hybritech® free PSA test -- also the first test of its kind to receive approval -- helps determine the percent of free PSA. The measurement of percent free PSA improves the accuracy of prostate cancer detection while eliminating a projected 20 percent of all prostate biopsies. The free PSA test is used following a non-suspicious DRE and a total PSA test that shows moderately elevated PSA levels (between 4 and 10 ng/mL) in men aged 50 years and older.
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