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血清游离ＰＳＡ（ＦＰＳＡ）和游离／总ＰＳＡ比值（Ｆ／ＴＰＳＡ）是一种新的前列腺癌筛选诊断方法。较之单纯ＰＳＡ测定，Ｆ／ＴＰＳＡ具有更高的特异性和整体准确性，有助于诊断前列腺癌，减少阴性活检。也有学者认为该方法的特异性和敏感性比起ＰＳＡ未见优越
Serum free PSA (FPSA) and free / total PSA ratio (F / TPSA) is a new diagnostic method for prostate cancer screening. Compared with simple PSA assay, F / TPSA has higher specificity and overall accuracy, which can help diagnose prostate cancer and reduce negative biopsy. Some scholars believe that the specificity and sensitivity of the method is superior to PSA