Re: Pregnancy Tests & HCG Level 'Mystery'

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• In reply to: anonymous@obgyn.net: "Pregnancy Tests & HCG Level 'Mystery'"

hCG levels double every 48 hours at your point in pregnancy. So 2 days before ir would have been around 700, 2 days before that around 300.

Urine tests vary with sensitivity from 25 to 250 units. Furthermore, if you had a diluted urine the concentrations in the urine are much lower and can therefore give a false negative result.

--
Dr Thomas Ind MB BS MD MRCOG
St George Hospital
Kogarah
Sydney
NSW 2217
AUSTRALIA

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