Figure 1From: A panel of kallikrein markers can reduce unnecessary biopsy for prostate cancer: data from the European Randomized Study of Prostate Cancer Screening in Göteborg, Sweden Nomogram to calculate the risk of prostate cancer on biopsy. All markers are given in nanograms per milliliter, except for human kallikrein 2, which is given in 10 pg/ml. The model can be used for a man with elevated prostate specific antigen (PSA) at his first PSA test. tPSA, total PSA; fPSA, free PSA; iPSA, intact PSA.Back to article page