title: A modified fecal excretion test for assaying intestinal absorption of 3H-folic acid.
abstract: A method for determination of the intestinal absorption of folic acid is described. It is based on the principle of double tracer technique in assay of fecal samples using gas proportional counting for 3H determinations. As the procedure is simple, reliable, and inexpensive, it is considered to be of value for laboratories without advanced equipment for radiochemical assay.
mesh_terms: D003037:Cobalt Radioisotopes; D005243:Feces / Q000032:analysis*; D005492:Folic Acid / Q000378:metabolism* / Q000652:urine; D006801:Humans; D007408:Intestinal Absorption; D008722:Methods; D014316:Tritium
chemical_list: D003037:Cobalt Radioisotopes; D014316:Tritium; D005492:Folic Acid