There are laboratory tests which can indicate whether you have been exposed to PCDDs, but these are costly and take weeks to perform. These specific tests exist to measure dioxin levels in samples of body fat, blood, and breast milk, but these tests are not routinely available. All people nowadays have some levels of PCDDs in their body fat and blood.
Although PCDDs stay in the body fat for a long time, tests are not used to determine when exposure occurred, but can be used to estimate dose of the exposure if the time of exposure is known.
Although exposure to 2,3,7,8TCDD has been associated with adverse health effects in people, no one effect is specifically related to exposure to PCDDs.

Structure formula of 2,3,7,8-Tetrachlorodibenzo-p-dioxin

3D structure of 2,3,7,8-Tetrachlorodibenzo-p-dioxin

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