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Which tests are more sensitive, ones that measure smaller or larger amounts of hCG?

April 26, 2017amounts HCG larger measure sensitive smaller tests

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Which tests are more sensitive, ones that measure smaller or larger amounts of hCG?

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A test that measures a smaller amount of hCG is more sensitive than a test that measures a larger amount of hCG– so a test that detects 20 mIU/mL of hCG is “better” (more sensitive) than a test that detects 40 mIU/mL. hCG is secreted by an embryo after implantation. The total amount doubles approximately every 2-3 days. A test that is more sensitive can therefore pick up a pregnancy earlier than a test with a higher sensitivity level.