title: Measurement of 33P in faeces by suspension counting of faecal ash.
abstract: The estimation of 33P in faecal samples by direct suspension counting of finely ground faecal ash particles is shown to be a convenient technique having good accuracy and reproducibility. The sensitivity of the method is such that 75 pCi 33P can be measured with a standard error of 2% in a counting period of 1 h. Using 50 mg of ash for counting, this activity requires a 33P concentration of about 40 pCi/g of faecal homogenate.
mesh_terms: D005243:Feces / Q000032:analysis*; D006801:Humans; D008722:Methods; D010761:Phosphorus Radioisotopes / Q000032:analysis*
chemical_list: D010761:Phosphorus Radioisotopes