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Step 2.2 Comparing Exposure Doses to Health Guidelines

bullet Evaluating Noncancer Effects

Although health assessors evaluate all adverse health effects, the method of evaluation for cancer-related health effects differs from the methods used to evaluate noncancer health effects. When evaluating noncancer health effects, health assessors use the following health guidelines.

Guideline

 

Source

MRL

minimal risk level

ATSDR

RfD

reference dose

EPA

RfC

reference concentration

EPA

The health assessor compares the exposure dose (the amount of the chemical that people are actually contacting) to the minimal risk level (or another guideline). If the exposure dose is higher than the health guideline, the exposure is further evaluated. If the exposure dose is lower than the health guideline, noncancer effects are unlikely to occur, but if the chemical could cause cancer, the health assessor will evaluate the chemical further.

 

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Where do health assessors find the most recent health guidelines?

 
Print/Text Version

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spacer Last updated: February 20, 2008 bullet ATSDR EPH Training Coordinator
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