Coupling of a sheep anti-T3 IgG to a solid phase for a triiodothyronine radioimmunoassay |
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Authors: | I Santos F Waerenborgh L Patricio |
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Institution: | (1) Sector de Radioisótopos, Laboratório Nacional Engineering Technologia Industrial, Estrada Nacional, 10, 2686 Sacavém Codex, Portugal |
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Abstract: | Optimal conditions for coupling sheep anti-T3 IgG to a solid phase are presented. We found that the optimal activation of microcrystalline cellulose was achieved with 0.15M 1,1-carbonyldiimidazol (CDI) in acetone. We also found that using a 25 mg/cm3 anti-T3 IgG solution, in barbitone buffer 0.05M, pH 8.0, we could get a reasonable yield of coupling and a remaining solution of anti-T3 IgG (first supernatant) with a suitable concentration (10 mg/cm3) for another coupling. The solid phase anti-T3 obtained in these two couplings present similar characteristics which make possible their use in a total T3 RIA. |
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