title: [Varying results of different procedures for determining the FT4 concentration before and after the administration of contrast media].
abstract: After application of contrast media a rise in FT4 concentration was detected by use of the ultrafiltration method (Amicon) and the Dow-Lepetit method, especially after injection of Biliscopin, whereas the determination of FT4 concentration with the Amerlex method revealed a significant drop in FT4 concentration after contrast medium application. The results obtained with the Dow-Lepetit test have to be regarded as correct. The decrease detected by the Amerlex test is probably the result of a changed affinity of albumin to the labeled T4. Within 1 hr after application of contrast media blood for the determination of FT4 should not be collected.
mesh_terms: D003287:Contrast Media / Q000494:pharmacology*; D003973:Diatrizoate / Q000494:pharmacology; D003974:Diatrizoate Meglumine / Q000494:pharmacology; D004338:Drug Combinations / Q000494:pharmacology; D006801:Humans; D007458:Iodipamide / Q000031:analogs & derivatives / Q000494:pharmacology; D007482:Iothalamate Meglumine / Q000494:pharmacology; D007485:Ioxaglic Acid; D011863:Radioimmunoassay / Q000379:methods; D013974:Thyroxine / Q000097:blood*; D013997:Time Factors; D014283:Triiodobenzoic Acids / Q000494:pharmacology; D014462:Ultrafiltration
chemical_list: D003287:Contrast Media; D004338:Drug Combinations; D014283:Triiodobenzoic Acids; D003973:Diatrizoate; C012386:meglumine iotroxinate; D003974:Diatrizoate Meglumine; C027278:urovision; D013974:Thyroxine; D007458:Iodipamide; D007482:Iothalamate Meglumine; D007485:Ioxaglic Acid
vernacular_title: Unterschiedliche Ergebnisse verschiedener Bestimmungsverfahren der FT4-Konzentration vor und nach Gabe von Röntgenkontrastmitteln.