THE CLAIM: You have to keep stitches dry and covered up after surgery. THE FACTS: The instructions for caring for fresh stitches are fairly universal: Keep the sutures clean and dry and avoid getting them wet for at least 48 hours. Doing so, the thinking goes, sharply reduces the rate of infection and improves healing.
Forensic toxicology is the use of toxicology and other disciplines such as analytical chemistry, pharmacology and clinical chemistry to aid medical or legal investigation of death, poisoning, and drug use.
Freebase (0.00 / 0 votes) Rate this definition: Median lethal dose. In toxicology, the median lethal dose, LD50, LC50 or LCt50 of a toxin, radiation, or pathogen is the dose required to kill half the members of a tested population after a specified test duration.LD50 figures are frequently used as a general indicator of a substance's acute toxicity.n toxicology, the median lethal dose, LD50, LC50 or LCt50 of a toxin, radiation, or pathogen is the dose required to kill half the members of a tested population after a specified test duration. LD50 figures are frequently used as a general indicator of a substance's acute toxicity.