Isotopic dilution analysis. Cholesterol in gallstones and caffein in tea, cola, and NoDoz.
D001628:Beverages / Q000032:analysis*; D002110:Caffeine / Q000032:analysis*; D002623:Chemistry Techniques, Analytical; D002769:Cholelithiasis; D002784:Cholesterol / Q000032:analysis*; D011865:Radioisotope Dilution Technique; D013662:Tea / Q000032:analysis
D013662:Tea; D002110:Caffeine; D002784:Cholesterol