Prostate Specific Antigen (PSA) Free with Total Ratio: This test is used to measure the percentage of free PSA relative to the total amount of PSA in men with serum PSA concentrations.
Free/total PSA ratio seems to be an orientation test: towards benign pathology if upper than 20% (VPN = 70%) and towards cancer if lower than 10% (VPP = 52%). Ratio is little contributive between 10 and 20%.doi:info:doi/10.1016/S0923-2532(02)01228-0J.P. Basuyau...
[10] Stephan C, Lein M, Jung K, Schnorr D, Loening SA. The influence of prostate volume on the ratio of free to total prostate specific antigen in serum of patients with prostate carcinoma and benign prostate hyperp...
游离PSA比值(Free PSA Ratio)是一种用于判断前列腺癌风险的指标。它是通过测量血液中的游离前列腺特异性抗原(Free PSA)和总前列腺特异性抗原(Total PSA)的比值来计算得出的。 前列腺特异性抗原(Prostate-Specific Antigen,简称PSA)是一种由前列腺细胞分泌的蛋白质,其主要功能是液化精液,帮助精子在射精时更好地游动...
Your doctor likely will order a free PSA test. Dangerous. Above 10.0 ng/mL. The odds are better than 1 in 2 that you have prostate cancer. Your doctor likely will recommend a biopsy. If your total PSA levels are in the borderline area between 4-10 ng/mL, your free PSA ratio can ...
The age, PSA level, free/total PSA ratio, PSA density, prostate volume, and PI-RADS score of enrolled patients were analyzed for univariate analysis and their difference was compared by chi-square test, t-test. The multivariate logistic regression analysis was also performed through SPSS to ...
Clinical impact of inter-method bias of prostate specific antigen assays Study of a coefficient of correction for the ratio between free-PSA and total-PSA To obtain a correction coefficient for the conversion of the fPSA/tPSA ratio between methods, considering Roche as the reference test, we fir...
Carriers of this SNP allele have reduced serum total PSA and a higher free/total PSA ratio that could contribute to late biopsy decisions and delay in diagnosis. Our results provide a molecular explanation for the prominent 19q13.3 KLK locus, rs17632542 SNP, association with a spectrum of ...
Gao XD, Miao Q, Zhang JL, et al. Clinical application of free/total PSA ratio in the diagnosis of prostate cancer in men over 50 years of age with total PSA levels of 2.0-25.0 ng ml-1 in Western China.Asian J Androl. 2022;24(2):195–200. doi: 10.4103/aja202182. ...
Free/total PSA ratio improves differentiation of benign and malignant disease of the prostate: critical analysis of two different test populations Urology 1999 53: 736–745 Article CAS Google Scholar Dowell B et al. Development of the Abbott AxSYM free PSA assay: performance characteristics and ...