▲4Kscore Test. The 4Kscore test takes into account four different prostate-specific biomarkers, namely, total PSA, free PSA, intact PSA, and human kallikrein 2, as well as the patient’s age, prior biopsy history, ...
Total PSA Test Method: Roche Chemiluminescent Immunoassay ≤4.000 ng/mL Clinical Significance:In men over 50 years of age with total PSA values between 4.000 and 10.000 ng/mL, the percent (%) free PSA gives an estimate of the probability of cancer. In these circumstances the measurement of th...
freetotalProstate-specific antigen (PSA) has emerged as the most predictive test of whether or not a man has prostatic carcinoma. The free to total PSA ratio provides important enhancement in specificity, thus obviating unnecessary negative biopsies. In the absence of an international standard for ...
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...
Free PSA is a newer evaluation for prostate health. This test is used to measure the percentage of free PSA relative to the total amount. Although not used as an initial screening test, a lower percentage of free PSA might mean your doctor needs to do a further testing on the pr...
Total PSA and Free PSA Levels There are no normal levels of total PSA or free PSA for men of any age. Different doctors may use different cutoff points to decide if you need a biopsy or other further testing. A PSA test measures nanograms of PSA per milliliter (ng/mL) of blood. But...
Variability of assay methods for total and free PSA after WHO standardization. Tumour Biol. 2014 Mar;35(3):1867- 1873. 33. Boegemann M, Arsov C, Hadaschik B, Herkommer K, Imkamp F, Nofer JR, Gerß J, Albers P, Semjonow A. Discordant prostate specific antigen test results despite ...
and other sources. PSA occurs in two major immunodetectable forms in blood. The major form is PSA complexed with the serine protease inhibitor, α-1-antichymotrypsin (PSA-ACT). Uncomplexed, or free, PSA is the other detectable form of PSA in serum. The Simoa™ Total PSA assay uses reage...
4Kscore, a test that measures total PSA, percent-free PSA, intact PSA, and a protein called human kallikrein 2 (hK2). This test can help determine your risk of aggressive prostate cancer when considered along with your age, biopsy history, and results from digital rectal exams. ...
14.VäisänenV, PeltolaMT, LiljaH, NurmiM, PetterssonK.Intact free prostate-specific antigen and free and total human glandular kallikrein 2. elimination of assay interference by enzymatic digestion of antibodies to F(ab’...