Through our know-how and expertise gained over 30 years in the tumor marker field, Cisbio Bioassays offers an accurate immunoradiometric assay for Free Prostate Specific Antigen. The FPSA-RIACT assay is based on a sandwich-type assay performed on serum or plasma, and is available in a 50 tube format for small runs.
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- FPSA RIA
Free Prostate Specific Antigen (FPSA) immunoradiometric assay kit
Features
- Working range: 0.02 ? 20 ng/mL (ng CIS = 0.83 y ng/mL 1st IS 96/668 or 10 ng/mL CIS = 12 ng/mL 1st IS 96/668)
- Sample: serum or EDTA, heparin plasma ? 100 ?L
- Analytical sensitivity: 0.02 ng/mL
- Functional sensitivity: 0.16 ng/mL
Applications
- Free PSA measurement is combined with total PSA for calculation of the Free PSA / Total PSA percentage
- Ratio higher in cases of benign prostatic hypertrophy than in those of prostate cancer
- Free PSA / Total PSA ratio is a valuable tool for the differential diagnosis of prostate cancer
작용원리
IRMA
Coated tubes
두개의 단일클론성 anti-PSA 항체는 샌드위치법에 사용된다.
첫번째 단일클론성 항체는 튜브 벽에 흡착되어 있다. 두번째 단일클론성 항체는 free PSA이며 Iodine 125가 표지되어 있고, 추적자로 쓰인다.
*1 step 검사 절차: RT(실온)에서 18시간.