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What does counting body products in bioassay involve?

  1. Monitoring external exposure levels

  2. Measuring the radiation in biological samples

  3. Collecting data from whole body counters

  4. Assessing personnel training needs

The correct answer is: Measuring the radiation in biological samples

Counting body products in bioassay primarily involves measuring the radiation levels found in biological samples, such as urine, feces, or blood. This process is essential for evaluating internal contamination from radioactive materials that may have entered the body. By analyzing these samples, health physicists can determine the amount of radioactive isotopes present and assess the potential health risks to individuals exposed to radiation. This method allows for the quantification of internal doses and helps in ensuring that exposure remains within regulatory limits. It is a key component of radiation safety and monitoring in environments where radioactive materials are handled.