The HCG ratio with a cut-off value of 1.82 can be used to predict pregnancy viability in assisted conception cycles. Also HCG measured 14 and 16days after oocyte retrieval with a cut-off value of 118.56mIU/ml and 258mIU/ml can be used to predict viable multiple pregnancy.
The Articles of Confederation was the first written constitution of the United States. Stemming from wartime urgency, its progress was slowed by fears of central authority and extensive land claims by states before was it was ratified on March 1, 1781.
What were the three flaws in the Articles of Confederation? Flaws of the Articles of Confederation: Denied a centralized national government; it denied it the power to tax or to regulate trade, not only between the United States and ot â¦ her nations, but also between the states.