DDT and its metabolites in human body fat in India.

DDE and the o,p' and p,p' isomers of DDT were assayed in 94 human biopsy fat samples from hospitals in Delhi by gas chromatography. DDT was present in all except 2 samples at concentrations from 0.17 to 176.5 mg per kg of body fat. The average total DDT content was 21.8+/-2.9 mg/kg, of which 45.9% was DDE. The average value reported in a similar study in 1965 (24.3 mg/kg, of which DDE constituted 39.7%) was not significantly different from the present value, indicating that the DDT storage status has not since undergone any significant change.