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| Non-Cancer Toxicity |
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| (continued) |
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| NOAEL (or LOAEL) |
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| Use uncertainty factors to account for within- |
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| human variability (10), animal-to-human |
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| variability (10), threshold (10), durations |
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| (10), and completeness of data (10) |
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| “Safe” dose = RfD |
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