University of Kentucky

Home pregnancy test: detects beta-hCG >500; positive by 4/40; sensitivity 50%, specificity . 77-94%. Serum: Should 1.6-2x per 48hrs ( exponentially) in 1st 6/40 plateau at 10-12/40 at 12/40; elimination half life 9hrs; positive within few days of conception; linear in … ................
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