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There are 1,000,000,000 nanograms in a gram. There are 1,000,000 micrograms in a gram. Therefore there are 1,000 nanograms in a microgram. So if you want to convert micrograms to nanograms, you divide by 1,000. Therefore 425 nanograms /1000 is 0.425 micrograms.

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11y ago

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