For preservation of viscera, clean, wide-mouthed glass bottles fitted with glass stoppers of one liter capacity should be used. Rubber inserts should preferably not be used under caps.
· 20-30 ml of blood taken from femoral artery or vein by per skin puncture should be collected in 60ml screw-capped bottles or in plastic capped tubes/10 mg of sodium or potassium fluoride per ml of blood should be added in blood for preserving blood.
· 20-30 ml of urine is obtained from direct puncture of the bladder during the postmortem examination with a syringe and needle and should be collected in 60 ml screw-capped bottles or in plastic capped tubes and preservative 20-30 mg of thymol blue or boric acid or acetic acid should be added as preservative.
· Saturated sodium chloride solution (common salt.) for all the visceral samples for chemical/toxicological examination.
· If there is an associated history of death due to acid intoxication, then all the samples should be preserved in rectified spirit.
(Contributed by Dr Sudhir Gupta)
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