“…In five other patients we have investigated who reacted to suxamethonium, five showed positive skin tests to suxamethonium and decamethonium, and originally we concluded that for subject 14 an error had been made on the first skin test. 9 Five years later, intradermal tests and the RIA were positive, and on a subsequent occasion two years later, the intradermal test for suxamethonium was negative while the RIA remained positive.…”