I went to Jomtien Medical Clinic ( next door to A Taste of Norway restaurant on Thappraya Road, Jomtien) for an allergy test. They have "packages" for tests for all sorts of things you may be allergic to. Not too expensive.
Excellent news. Thank you very much for your prompt response. Qantas have a sale which I'd lik5to take advantage of. Good to know I can go ahead and book with confidence. I really respect the sensible and correct advice in this group.