Presence of dieldrin in human body can be measured in blood, urine, and body tissue. Special equipment is needed to measure dieldrin in such bodily tissues or fluids thats why they are not usually available at a doctor's office. However, a sample taken in the doctor's office can be properly packed and shipped to a special laboratory, if necessary. Dieldrin can stay in the body for months, and measurements of dieldrin can be made long after exposure to either dieldrin. The test results cannot be used to predict if amount of dieldrin present in the body will have any adverse health effects. Exposure to other chemicals at the same time as exposure to dieldrin could cause some confusion in understanding test results for it.