One method to detect post-mortem redistribution of a drug is to

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Post-mortem redistribution occurs when drugs move from areas of higher concentration (such as the stomach or liver) to areas of lower concentration (such as the peripheral blood). Therefore, comparing the concentration in the central blood (such as the heart blood or aorta blood) to the peripheral blood can help detect post-mortem redistribution. This is because the central blood is less affected by redistribution and more representative of the drug concentration at the time of death. Comparing the urine to the vitreous fluid (A) or the blood to the liver concentration (D) may not accurately reflect the drug concentration at the time of death due to post-mortem redistribution. Testing the vitreous fluid at the time of death (C) may not be practical or possible in some cases.

One Method to Detect Post-Mortem Redistribution of a Drug Is