Objective To evaluate the value of serum prostate specific antigen (PSA), free PSA (FPSA) and PSA density (PSAD) in early diagnosis of prostatic cancer.

• 摘要目的探讨血清前列腺特异性抗原(PSA)、游离前列腺特异性抗原(FPSA)、前列腺特异性抗原密度(PSAD)对经前列腺癌早期诊断的价值。