Final answer:
If blood is not available, the medical examiner cannot accurately determine a recently dead body's alcohol content using urine, cerebrospinal fluid, or vitreous humor. The only reliable method for determining alcohol content is by using a sample of blood.
Step-by-step explanation:
If blood is not available, the medical examiner cannot accurately determine a recently dead body's alcohol content using urine, cerebrospinal fluid, or vitreous humor. These bodily fluids do not provide an accurate representation of the alcohol content in the body.
The medical examiner can only determine the alcohol content with a reasonable degree of accuracy using a sample of blood. Blood is the most reliable and preferred method for determining alcohol content in a deceased person.