Singh, DalbirPrashad, RajinderSharma, Suresh KumarPandey, Avadh Naresh2011-09-272011-09-272005-07Singh Dalbir, Prashad Rajinder, Sharma Suresh Kumar, Pandey Avadh Naresh. Double logarithmic, linear relationship between postmortem vitreous sodium/potassium electrolytes concentration ratio and time since death in subjects of Chandigarh zone of Northwest India. Journal of Indian Academy of Forensic Medicine. 2005 Jul; 27(3): 159-165.http://imsear.searo.who.int/handle/123456789/134740Present authors had recently demonstrated a highly significant double logarithmic linear relationship between time since death and serum sodium/potassium concentration ratio and also with the serum chloride concentration in humans. Consecutively the present study was carried out to substantiate this disposition in vitreous humour. The data on postmortem vitreous sodium/potassium electrolytes concentration ratio in 1026 subjects, revealed a highly significant relationship between logarithm of vitreous sodium/potassium electrolytes concentration ratio and logarithm of time since death upto 66 hrs. of death. Postmortem interval can be predicted from vitreous sodium/potassium electrolytes concentration ratio with standard error of estimate 0.1800 hrs. However, factors like environmental temperature, age & gender also influences it significantly.enTime since deathpostmortem intervalvitreous sodium/potassium ratiodouble logarithmic relationshipAutopsyDeathElectrolytes --analysisElectrolytes --chemistryHumansLinear ModelsLogistic ModelsIndiaPostmortem ChangesPotassium --analysisPotassium --chemistrySodium --analysisSodium --chemistryTime FactorsVitreous Body --chemistryArticle