Anatomy Poisoning 5880d85e For blood and urine, preservative used is A Sodium chloride B Sodium fluoride C Sodium acetate D Sodium gluconate High-Yield Explanation For blood, CSF, vitreous humor and urine, sodium fluoride is the preservative (100mg/10ml) Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 404