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  • Title: [Measurement of serum prostatic acid phosphatase (PAP) by Delfia PAP Kit using europium and clinical evaluation in patients with prostate cancer].
    Author: Akimoto S, Ohki T, Ichikawa T, Akakura K, Shimazaki J.
    Journal: Hinyokika Kiyo; 1994 Nov; 40(11):987-93. PubMed ID: 7530404.
    Abstract:
    Fundamental and clinical studies of serum prostatic acid phosphatase (PAP) detected by a Delfia PAP kit were performed. The system is a time-resolved fluoroimmunoassay using europium as a tracer. The lower limit of detection was 0.2 ng/ml. Sera from 54 patients with prostate cancer, 20 with benign prostatic hypertrophy, 20 with urological malignancies other than prostate cancer and 140 adult males over 46 years old were determined. From the mean + 2 S.D. of serum PAP values obtained on the adult males, 1.5 ng/ml was considered as the upper normal level of adult males. By calculating the efficiency and ROC curve using the PAP values of prostate cancer and benign prostatic cancer, 2.5 ng/ml was decided as a cut-off value of this kit. The positive rates of adult males, prostate cancer, benign prostatic cancer and urological malignancies other than prostate cancer were 0.7%, 65%, 20% and 10%, respectively. The sensitivity of stage A2, B2, C and D1 + D2 was, 0%, 0%, 64% and 83%, respectively. The efficiency of the Delfia PAP kit was 52% and that of the Markit M PA kit was 71%. The correlation between the values assayed with the Delfia PAP kit and the Dinabot PAP kit was very high; the value obtained with the Delfia PAP kit was about 80% of that obtained with the Dinabot PAP kit.
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